@@PepitoStyleMCmf rogan chimps out on dmt and spergs out about existential crisis everytime he got a qualified scientist on these days, i listened to this pod, cant hear shit rogan interrupts and derails the convo like hes talking/ has an expertise in the stuff Cox is talking about
I agree. He used to sound batsh!t crazy to me when I first started listening to him. And the more I learned as I listened to many other geniuses, the more I could piece together what he was actually saying. And I’m no moron. Brian is a marvelous genius, and we are blessed to listen to him, even if he sounds like Greek to us. In another century, or two, I hope that his intelligence sounds like common sense to the human legacy that is to come.
tbh i thought distance got greater if you travel towards something . this is increadible knowlage. who would have thought the distance got smaller if you travel towards something, this is just mindblowing, this guy deserves a nobel price.
Except that would be a “problem” because the government doesn’t want everyone to be smart, they want everyone to get out of school and become mindless workers to make money off of. Which is why the school system is both bullshit and rigged
It's the art of effective communication. There are plenty of geniuses who can talk perfectly well to one another but are so saturated in their own environment They have a hard time speaking to others outside of their collective
@@Caiphex”if you can’t explain something simply, you dont understand it well enough” are you sure that’s true? or are you just advocating for someone you’ve never met.
@@okomanOr, maybe people who dedicate this much of their lives to learning and teaching do it because they actually enjoy it. But I’m sure you’ve personally already dismantled quantum theory right?
@@okomaneverything he said is widely accepted to be true though experimentation and reproducibility, your callous avarice and apathy towards thousands of hours and countless sleepless nights spent trying to solve questions your feeble mind dare not ask is truly ironic, for the podium you built yourself to stand on is as broken and ill constructed as your opinions.
I dont belive on These Theorie. It is just a Theorie and nothing Else. Nothing Cant stop the time even not forrward or backwards. Baumgartner it is jump Form there and Look he is sam old than before
@@jarceoja That's the thing. "How long it takes" is relative. If you traveled so fast to Andromeda, then for you it would only take moment, but for the rest of the Universe, millions of years would have passed. This is why it still takes years for light from nearby stars to reach us on Earth, even though from an individual photon's perspective, no time has passed at all. You always (even now) travel at the speed of light through spacetime, it just that right now almost all of that is you traveling (forward) through time. However, if you travel through space faster, then your "speed through time" is reduced, so that the total is always c. This is why this effect happens.
@@jarceoja A couple minutes for whom? Relativity is all about looking at time/space from different observers. For the guy in the spaceship only a minute might have passed, but for the people watching the ship from Earth, years could pass.
100x better than Neil. Informative, good communication of interesting facts, and no ego. Tyson just sounds like he thinks he’s talking to children, while explaining the most basic, mundane, and commonly known facts. This guy is passionate without sounding arrogant
I knew someone would use their own diskike of Niel to try to turn this into a competition. When both of these men are awesome and there is no competition between them. You don't know Neil and you don't know Brian. Shut. Up.
I met this guy at Manchester University back in 2001. He was drinking a beer in the student bar. I had no idea who he was but the friend i was with made it absolutely clear to me that he was an incredibly important physicist. Here i am over 20 years later watching him being an absolute boss on RUclips.
@@RhysWilliams-u3o He wasn't a professor in 2001 but he was well known on the Manchester University campus as an extremely sharp mind. He earned his bachelor of science degree in 1991 and a Doctor of Philosophy degree in 1998. I'm 42yrs old and don't need to make up stories to get validation on the internet.
He should start his hardwork over because he is the furthest from being a scientist. What he says is not a fact and you could do the maths alone if you even tried to verify this information. In a minute at lightspeed (about 300 000 km/s) you can travel 18M km, you would need at least 3 to 10 minutes to reach Mars. Andromeda is 2.5M Lightyears aways, you would need 2.5M years to get there at lighspeed.
@@ricksanchez6125In this rare case, he is correct. I am a qualified Physics teacher. Relative to earth it is indeed a 2 million (+) journey to Andromeda. But as speed tends to approach the speed of light, time dilates closer and closer to zero . And so do relative distances. That's Special Relativity. Nevertheless, I call this kind of scientist, "Popular", and much of his "science" I call "popular science" because he also speaks a whole lot of nonsense about things that are pure conjecture which are also unproven. "Popular Science" is the diet of garbage we get fed on TV "science" shows. It reflects the pseudo science taught at school ahd university. Not to be conflated with real science which is substantiated by objective experimentation and observational evidence. Objective science and Theoretical pseudo science are poles apart. And there is a reason why theoretical physics IS NOT experimental physics. Experimental physics is grounded in hard work and reality. Theoretical physics is grounded in clever founding arguments and mathematics but never demonstrated by experimentation. Also it should be understood that mere "interpretation" of physical phenomena is not the same thing as solid fact. Observations which consistently support hypotheses lead to theories. But all theories are open to further experimentation and observational evidence. So objective science grounded upon real experimentation IS not popular science built upon conjectures and imagination and "clever" arguments. Clever sounding arguments are not facts. Yet popular hypotheses like big bang and biological evolution are not grounded in fact. At most, they conflate real observations with a pile of human speculations and "clever" arguments, not experimental fact. The experiments carried out are highly depended on extreme bias and interpretation. This is not how we do objective science folks. And why do we try to silence the multitudes of PhD scientists who profoundly disagree with the transient popular pseudo science paradigms and hypotheses which exist for the moment?
@@ricksanchez6125 Time and space is relative, that was his whole point. From the perspective of the Earth, yes, it would take 2 million years, but from the perspective of the spacefarer, it would take just one minute, because the distance is much shorter.
@linuslundquist3501 still nonsense, the space doesnt really shrink and the distance is not shortened. Relativity will not reduce million years in a minute, even If we use what he said about protons, it would feel like thousands of years. Anyway there is no way to measure it so there is no proof.
It is amazing to listen to somebody that speaks with so much passion and delight of science and at the same time makes extremely complex concepts so fun to listen to. What a beautiful mind.
Essentially, what he is saying is that time is relative to the person experiencing it. So what feels like a minute to you will essentially actually be or million years to someone else. This is why time is a construct and why they say time is the fourth dimension and that it can technically be bent is because of that fact.
I have a lot of thoughts about this because is time a construct? Is it a literal thing or a literary device of science? For most of my life I've understood time as not being real. This was solidified by physics classes and Einstein. Time was obviously just a function of the movement of energy, a ripple seen on the surface of a thing, not a separate flow. But what about space? Is space real? We inhabit it but are we sure of its limitations and properties? We believe we can measure space but are we measuring space or are we measuring mass and volume? In the same way a regular cycle must occupy "time" must not mass also occupy "space"? That's why at this point in my life I'd say the spacetime continuum is both a construct as well as a synonym for the universe. My original comment I started writing was this: That's not why we say time is a construct. We say time is a construct because it just obviously is, and I don't mean this condescendingly. There is no way to view or measure something known as time. It's a frame of reference we create with respects to something exhibiting a regular period. If something exhibits a very regular period with no variance, it creates a strong clock. The most primitive clock, a sundial, is just a measure of the sun's position in the sky and the angle of the shadow it creates. The most powerful clocks we have use devices that measure slow radioactive decay or the spin of microparticles and other such things. All measurements that include time can replace the time vector with a period. But it's difficult to explain cycles, periods, oscillations, vectors, etc, without talking about time. I'd wager we could just as equally say space is a construct. But it's difficult to talk about distance and volume without imagining that they occupy space. Just like it's impossible to imagine something existing without occupying time. Though I think it's easier to imagine something frozen in time since our bodies are exponentially less stable than many minerals. Therefore we perceive many things as being frozen in time naturally. Here's my though experiment. If you were frozen in time could you still think? If you were frozen in space could you still think? If you're truly frozen in time, there's no neural firing happening in your brain. But the same is true for being frozen in space. If you're completely prevented from moving at all in space, you can't fire neurons either. But here's my follow-up question to help us expand our understanding of how we think of time and space. Do you die? Well, my intuition says, if this were possible, that being frozen in time wouldn't cause you to die if time really exists, as your processes just all go back to normal when time resumes. But if space and time aren't a continuum, and space is real, then being truly frozen in space means your death. And this actually sounds obvious to us. The vacuum of space is freezing. But it's also boiling. Heat doesn't travel through space, it travels through mass. Sorry if I got to rambling a bit here. I just wanted to say space isn't any more real than time. But it's very difficult to functionally communicate without references to spaces and times. From my perspective time is like a shadow cast by the universe's energetic activity. If there's no energy, no observers, there's no time. I think there might be, if we're lucky, deeper understandings of energy for us yet to learn that may lead us to even more eldritch and wonderful technologies or tragedies someday. I feel at least confident that energy and mass are real and that's already very magical to me. My brain needs to imagine some kind of spacetime grid for them to exist within. I'm comfortable calling this "the universe". We have laid waste to cities by unbinding the energy it took to smash atoms together in stars. We fuel cars by unbinding sunlight from old carbohydrates. Who knows how we might discover to manipulate energy and mass in the future to our whims. I hope we learn to tesseract to some degree someday lol, to fold the grid where we can avoid having to move through it. Or even freeze time, so people can explore the depths of the universe without having to move at the speed of light. That's just the best/closest way we know to freeze time currently.
So 1 minute on a timer to get there, 2 minutes round trip still wouldn't be 2 minutes the same as on earth? What's the difference between "perceived" time vs "measured" time.
@@CMICthis is why it’s called the theory of relativity. When an object with mass approaches the speed of light, the apparent distance between objects shrinks. This is because the energy/mass involved to move at this speed warps space-time. So you are obviously moving very fast so now the shorter distance is traveled even sooner. However to an outside observer you are essentially just traveling at a set speed for a set distance since their space-time isn’t being distorted. This means in one scenario the space is warped resulting in faster travel and the other no such warping occurs so the travel occurs slower. That’s why it’s important to note when you warp space in this manner you also warp time. The two are linked so to change one is to change the other simultaneously. Put another way, instead of the space between the objects having shrunk because of the distortion it’s that the time is decreased instead.
Feels wonky. I can't imagine a spacecraft moving at near the speed of light away from the Earth without also thinking about the Earth moving away from the spacecraft at near the speed of light, and thus experiencing the same dilation of time. Researching the matter turns up a discourse on "inertial frames" but it all sounds like jargon to me.
We don't really think so. It is attention seeking people who want to feel important and us shining a light on them(giving attention) and laughing at the idea. Spreading the thought that this is a more common thing than it is.
@kryptoniridium Can you please elaborate on why that'd be the case , although I didn't think that the first idea is neither practical nor possible , I just want to understand why would an attempt to concretize it would end up in that .
Distance of light travel from the Sun to Earth: Light takes about 8 minutes and 20 seconds to travel from the Sun to Earth. This is because the average distance from the Earth to the Sun is approximately 93 million miles (150 million kilometers). Distance from Earth to Andromeda: The Andromeda Galaxy is much farther away than the Sun. The distance to Andromeda is about 2.537 million light-years (or about 2.4 × 10^19 kilometers). To clarify, A light-year is the distance light travels in one year. Since light travels at about 300,000 kilometers per second, it covers around 9.46 trillion kilometers in a year. Given the immense distance, light from Earth would take about 2.5 million years to reach Andromeda, not minutes.
Brian Cox always fascinates me with his discoveries and his knowledge of our vast universe. Probably my favorite physicist to listen to bc of how excited he is to talk about things. Never a boring conversation
He means that for humanity, colonizing other galaxies is possible, but what was on earth, after you left, may no longer be suitable for the name "humans"@@patrickdegraaf5433
@@patrickdegraaf5433i dont know how much more context you needed lmao Spread humanity = bringing human eggs and sperm samples stored by donators to another planet in another galaxy to breed and potentially have a new life Why is that so difficult
I appreciate his frequent usage of "in principle", it's refreshing to hear an expert who's being REALISTIC and not exaggerating science with pseudoscience to impress people.
So are you saying that realistically, there's no truth to what he's summarizing? Because there are models and examples like the hadron collider that give good freedoms to this Theory So downplaying it I feel is kind of meaningless along with using the word in principle if there's no concrete evidence other than a potential theory that may or may not be achievable. I say this because there's plenty of phenomenon that give or make. It seem like certain theories are possible, but this is assuming that we have an even stronger understanding of That gives strength to these theories Even function the way we believe they do
Theory and practicality/engineering are two very different things. Warp drive of a spacecraft is in theory possible, but it requires the energy conversion of the mass of Jupiter to achieve. Also, science becomes pseudo-science during every paradigm shift.
There isnt. Distances do not shrink. He is talking about perception of distance as the traveler based on theory. If you traveled 300LY away in 3 seconds, stayed for 3 hrs, then returned in 3 seconds, exactly 3 hrs and 6 seconds wouldve passed on Earth. If you blinked there and back in an instant, it would seem like you never left, because your colleagues' perception of your light and sound would not register the change before you were back. Same for your own perception. Nothing he just said is real. It's strictly intellectual exercise. We know this isn't real already. @@HeraldoftheMEME
this is all theoretical stuff, it’s like me having a really good idea and writing it down and others study that idea and explain it. It may be the most realistic sounding idea, but it may have no existence in reality, and hence it’s just scientific mathematical fantasy. Unless it’s testable and observable and can be replicated then it’s just a really good theory, and nothing more. I agree, I like his use of “in principle”, gives him humility where other scientists use words like “we know” or “it’s known”, “it’s scientifically proven”.
@@sethgoldberg3300 then how do you explain even there being a return? How does it make any sense that we would even be able to travel such a far distance and still be alive to tell the tale... No one still alive on the way back... There is no perception. If there is no one to perceive the experience, does that make any sense? Because one thing we haven't figured out especially when it comes to traveling through space and time is aging so this Theory on face value doesn't make any sense which again make the term "in principle" meaningless... We're not even close to understanding and figuring out indefinite or very long-term suspended animation. I mean to be fair. Time isn't exactly how we perceive it and considering the new discoveries with our most recent with the James Webb telescope according to Michigo Kaku we have barely scratched the surface of space exploration and how we understand the expansion or the way in general, the universe function assuming working series is correct
Only if they travel by ship at the speed of light. If they have the technology to create wormhole"portals"and bend spacetime, in principle would be possible. But it most likely would be detected by our technology.
@@tims8603 Von Neumann and Fermi had your exact thought and came to the infamous two conclusions: we are alone which is a frightening thought, or we are not which is an even more frightening thought. Your question would easily be answered by Von Neumann drones or berserker drones. He is the father of modern computers and game theory (a part of science where what-ifs are played out). Aliens don't need to be organic
This man just answered the entire problem i was having understanding the 4th part of time in 60 seconds thru his explanations man, this guy is a treasure
I genuinely love Brian Cox. I love that he loves science the way he does, that he can explain such a complex thing in such an easy way to the untrained mind. I don’t think I’ve ever watched anything of his and not left it thinking.
Lol True because if interstellar travel was mastered eons ago we wouldn’t recognize or accept anyone coming back and claiming the earth is their home.😂
Maybe earths inhabitants already have created this technology. They travelled to distant galaxies and come back but so much time has passed that the earth has gone through several evolutions and the aliens that some believe have visited earth are returning explorers?! 🤯
That's why appreciate the accessibility that scientists have gotten in the recent years. the more you learn about this kind of stuff, the more it makes nature and the law of physics feel like a living thing in the sense that it seems like it rigs itself any way it can to keep us from learning its secrets... and if we do, there is a penalty... you lose your home and time as you know it... you can't travel back.. the universe expands so fast that home isn't an option any longer. its insane when you think about it.
Why why why did I not have teachers as enthusiastic, intelligent and pleasant as Brian Cox, I'm positive I would have had a whole better happier life, Neil deGrasse Tyson is another, brilliant, pleasant and interesting very clever man.
That’s like watching pro football and being like “why didn’t I have Tom Brady as my high school football coach? I would’ve been so great.” There are plenty of reasons why your teacher wasn’t like him, but one huge one is that he is top of the class, people like him don’t just grow on trees.
@@Ed19601something being factual does not mean it is easy to understand though and that’s what the comment is about. this guy explains things in a way that the general public wouldn’t be confused
For some reason this doesn’t make a lot of sense to me, because if it takes a minute at near light speed to get there, and a minute to get back, and millions of years pass. Are the minutes longer by perception ? And if so how can we call them minutes when the earth, the place we belong calls it 4 million years?
I feel like the issue you’re having is because you’re thinking of speed in a way different than what he means. In this case he quite literally means light “speed”. Light in this case is what is observable, or will become observable. Speed being the measurement of adding time and distance together. If you were to travel at light speed, time would completely stop. Light does not exist in time because it’s entirely unaffected by gravity as it has no mass. We cannot travel at exact light speed because we have mass and are affected by gravity, which also affects time dilation. In this case here, time and distance become absolute constant measurements to achieve speed. So even though you traveled 5 million light years in a minute(relative to YOU), both the distance and time still existed differently to the outsider observer because that was the only way that it would be able to be perceived. To the person traveling, their perceived time was not changed, but to the person observing, they were slower relative to the traveler. In this case, time is inverse based on velocity. So the faster you go, the slower time has passed relative to the “slower” observer. In the case of light, it experiences essentially teleportation if that makes it make anymore sense. To light, it’s both admitted and absorbed instantaneously, so you get light speed which is the theoretical maximum of speed as it both starts and stops instantaneously relative to its observable space. It experiences all of the distance and none of the time.
@@james3003 Very thorough and nice explanation :) Though a slight disagree on the last part: "It experiences all of the distance and none of the time." It experiences neither time nor distance, as it is impossible to travel any distance if no time is passing. Relativistically speaking, from the perspective of a photon, all distances are 0, because no matter where you go, you arrive instantaneously.
For anyone who is confused by this difference in time/length: As stated in Einsteins theory of general relativity: the only fundamental constants of the universe are the speed of light and the laws of physics. This means that the measurements of time and length for the same object are not the same for all observers, they are relative to the state of the observer. Specifically if you want to learn more, these concepts are known as “time dilation” and “length contraction”. Time dilation was popularized by the film “Interstellar” but length contraction is its lesser known brother and the two go hand in hand. And lastly: the reason you may have never been taught these things are because they do not apply to your life. Newtonian physics accurately describe the motions of everything on earth, and almost everything in our solar system. It’s only at great speeds or great distances where these differences need to be taken into account in order to make accurate predictions. Does it make sense to us? No. It shouldn’t. Our brains evolved with a fundamental grasp on Newtonian physics as that’s what applied to our lives, but the true nature of the universe is so much more complex and confusing than our brains can comprehend. Same idea as our brains being incapable of imaging a trillion of something.
@@gamegladi8or669 Then 2 options, either the one that made this video cut what he said leading to nonsense. Or he is a poser. Because there is no way to know for sure that if we were to travel at light speed for a distance of 2.5M lightyears, we would feel like the travel lasted 1 min. It would take more the 4M years to go and come back because one way takes already 2.5M years even at lightspeed. Relativity would shorten that span from our perception but not to a minute, this is ridiculous.
Bro imagine coming back 4 million year later I'd be fine with like 2 or 3 hundred but 4 million way to far in the future bro that's long enough that humans would have probably evolved by then and when I got back I would probably be treated like a caveman and shoved in a lab to be studied that's also assuming humans lived that long in the first place for all I know I could be coming back to a nuclear wasteland
Hell, even after 1-2 hundred years it would be difficult to communicate with other English speakers, as the language is always evolving. Also, society, culture, and technology would be unrecognizable!
The craziest twist of getting there in the first place likely means when you arrive you'd probably be met by humans from your perspective future having been there for a very long time - celebrating the first person to set off finally arriving! Those millions of years provided so much time to improve the understanding and technology for space travel to have come up with some sort of wormhole method to get there long before you. Actually, arriving and being met with nothing would be terrifying sense of foreboding over what happened back home.
@@ShaimingLong Just a tidbit: wormholes require exotic matter and so far we were not able to create it. The now in construction LLHC tries to create some. The best we at current understanding of physics can create that is FTL, is the new warp drive some German post-grad proposed. And it has its own can of worms like the time paradox and its requirement of 2kg of antimatter to travel to alpha centaury
So to travel through space is to time travel. This really blows my mind, as well as the fact that whatever planet we'd be traveling to would not be the same as what we observed when we left. We could see a hospital planet from Earth, set course, and arrive at a massive black hole.
I don't know the why's, but time and space are inorexically linked, if you have one you have the other, a space with no time is meaningless, and time with no space is meaningless. This is also why, when space fuckery happens around massive wells of gravity, time gets all fuckered out too
TRUE. That's how our physics demanded. Just like if we on Earth (Sun system) wants to go to one of planet in Proxima System whics is The CLOSEST system from our solar system. It will takes 4 years in 100% Speed of Light. And when we want to go back, it will take another 4 years in 100% speed of light. In that scenario, we are just spend of full 8 years just to going and back from earth and Proxima Centauri 8 years is still a long time in human time
The faster you move through space, the slower you move through time. Light from the stars spent thousands of years to reach Earth for us to see it, but to the photons? To the light itself? A mere instant. Relativity.
@@cavestudios8944 because he lives in fantasy land and loves to make stuff up to convince dumb people of things that are simply just not true, just because he claims some physics equation said it was possible, it does not mean that it is. And obviously it's not, and never will be
@@cavestudios8944 The time you experience slows down exponentionally as you travel closer to speed of light. Thereforei, in reality 4 million years might have passed, but you would experience only a minute of time. Your own time slows down from your perspective. We have already experienced this minute time difference between clocks on earth and on our fast moving satellites.
@@cavestudios8944 ok let me explain when you travel at the speed of light or close to it like he said time shrinked but its from the travelers point of view but for others times is still same as before which means for example we send you in a spaceship at a speed of light to galaxy you will reach in a minute also it will take you same time to return, but its just your perspective , people who are on earth will still experience regular time 4 million years
@ And just like that the stuff thought of as sci-fi on Star Trek became reality. What we perceive as sci-fi today could well be reality through science tomorrow.
If we warped space to move us we wouldn’t actually be travelling the speed of light we would be moving our section of space and so we wouldn’t move at all technically. Example: if you pick up a piece of a puzzle and move it across to the other side of the puzzle, the image is still the same and you didn’t change it. The image being time still moving at the same pace, just that the piece of space is moving. All the other pieces of the puzzle still keep the same image (time). Hard to explain but I hope I did at least semi okay.
@@LeDrPsycho No, this is another idea. It's the basis for the Alcubierre drive. In general, it makes the destination come to you, rather than the other way around, since the speed of light is only a limit for local movement of matter. In practical terms, it's problems are similar to the wormhole approach - untold amounts of energy needed (on the order of an entire star's lifetime output), exotic "anti-gravity" matter required to stabilize the spacetime bubble for the ship etc. Oh, and there's also the fact that uppon arriving, you'd bathe light years in front of you in enough gamma radiation, to be comparable to a GRB. Fun stuff.
To explain those who say their head hurts understanding this: Photon: These are what light is made of. They are massless balls with very high energy. They have no mass hence they experience no gravity and when we experience no gravity, Time does not matter to us. Hence hypothetically if we reach the speed of light (which we obviously cannot as we have mass), there will no time for us. We can "hypothetically" be anywhere in the universe in a blink of eye. I.e: As we move closer to the speed of light time slow down for us and then it completely stops.
2 inferences can be made from this: 1. Since we have mass and cannot be like photons, he is talking rubbish. 2. If we can fashion a vehicle that behaves like a photon and travel at the speed of light, we will be going so fast from different points and if it takes 2 seconds to get somewhere and two seconds to get back, we would have only been away for 4 seconds (we just did that at the speed of light), and he is talking rubbish. I'll also add that he has a very well trained facial expression to disarm his audience and make them feel like he isn't deliberately being dishonest but you can choose to believe him and...
@@okoman Lol. He's not talking rubbish, He is talking hypothetically. If we talk about practical physics all the time then physics won't be all that impressive. He's a theoretical physicist, what he's talking is what can theoretically possible. Theory and experimental physics are two whole different branches of physics with completely different jobs
Unless we somehow took the earth with us, when we’d come back from the trip to andromeda, the earth will have still undergone the 4 million year changes. Who knows what catastrophic events could have happened during those 4 million years.
bLACK science man. If a white person says what bLACK science man says it wouldn't even be considered. But since a bLACK man says something its amazing because of the bigotry of low expectations.
Time is relative. The faster you move through space, the slower you move through time. Just you though. Everything else still ages just like before. If I set out on a starship that goes close to the speed of light and travel to andromeda, I can reach there in about a minute (for me), but if the people on earth were to observe my entire trip, they'd see me travel for ~2.5million years. Things that actually travel AT the speed of light (like light) do not experience time at all. From the light's relative perspective, it was created, and instantly traveled across the entire universe. A (in my opinion) decent (though not entirely accurate) visualization of time relative to the traveler is a simple exponential growth graph like 2^x. Time on the X-axis, space on the Y-axis. At some point, the line will (essentially) ONLY move on the Y-axis. It has stopped moving through time (x) and is moving through space (y) instantly.
No amount of mass has ever or will ever travel at any fraction of the speed of light in a directed manner. May be particles involved in a Quasar, colliding black holes, or some other cataclysmic disaster. But they will never return back to their origin!!!
I think it's actually that the physics processes slow down at near light speed so you're just perceiving the flight as shorter than it is, and it's just like 3x-5x slowdown I think. So you'd be flying to alpha centauri for 8 years but it'd feel like 2. And "in principle" light speed is not as big of a deal, you just need to keep accelerating at 1g for a year, so that's a question of enough fuel. I hate when physicists just go embelishing the shit out of everything as much as they like cause they don't think anybody cares enough to read some.
It depends on what you compare your age with. If you are moving from Earth at the speed of light and your baseline is Earth time, then you are right. However, it seems we live in our like bubble as big as something moving with us at the same speed as the spaceship in which the biological age would probably follow the earth’s years. However, these thoughts made me think that time is like a feeling of missing somebody even though we don’t move around at the speed of light. The more you miss somebody the further they are from you. The faster you travel in space, time flies faster accordingly for those you have left.
@@Simonio8 The main principal behind time disparity is Inertial Reference Frame (Frame of Reference) if you're interested in reading up on it, but if not I can give a quick example. Imagine a person in cryo-stasis (PersonA) moving between 2 points, and an observer (PersonB) measuring the distance and time of the move. PersonA will experience instantaneous movement with no time passed, while PersonB will measure actual values for velocity, acceleration, etc... A major principle of Relativity is that a particle moving at the speed of light doesn't experience the passage of time, so from it's Reference Frame it exists simultaneously at every point on it's flight path. But an observer can measure that particles position at any given point in time. This difference in Reference Frame between subject and observer is the reason you get things like Quantum Uncertainty, Quantum SuperPosition, the Quantum Waveform/Waveform Collapse, Quantum Entanglement, and weird paradoxes like Schrödingers Cat.
@@jeremykeasbey4145 Mate i can understand why someone in cryo sleep doesn't experience the travel time, but that feels like how if someone falls asleep on a plane feels the journey alot less than someone who was awake the whole time. What I dont under stand is how some one would just cease to experience the time all together. Just like I dont understand how he says traveling faster makes the distance shorter. I get that travelling faster would make the journey time shorter but not how it makes the physical length of something shorter.
@@MrSackerson it's due to the definition of the speed of light in Relativistic Terms. A particle moving at lightspeed velocity clocks in at (I'm rounding here) 300 million m/s, but only to the observer. The particle, from its POV, approaches infinite velocity the closer it gets to lightspeed (according to General and Special Relativity). That's the reason e=mc² is such an important equation, and why Reference Frames are such a big deal; because particles like photons that have zero mass have infinite velocity, yet we can actually measure it at 300 million m/s *a little extra math* In Classical Physics a particle moving at lightspeed would move 27000m in 0.00009s, but we're talking General Relativity here. From the particles POV, it's moving 27000m instantaneously. It's velocity is 27000m/0s. When Cox says they shorten the distance traveled, it isn't meant literally; he's keeping constant time instead constant position to avoid an X/0 calculation error.
@@MrSackerson It's not that you don't experience time. If you were on a spaceship travelling very close to the speed of light, you wouldn't notice anything strange about how time works. It's just that a distance that you'd expect to travel for millions of years would be crossed in a matter of minutes, but only by your reconing. It's not an illusion, any clocks you've had with you will tell you the same. However, millions of years have in fact passed for the rest of the Universe. I can't explain the details of how this works to you without writing a whole book here, but know that "distances getting shorter" is just as valid as "time running slower for the traveller" - you can choose either of those intetpretations and it will be a correct way of thinking about this phenomena. This is why it's called relativity.
Yea. I don’t understand it but I do like how do you age 2 minutes but everything else ages 4 million years. If u moved at the speed of light and it takes 2 minutes to go to the andromeda and back would it not make sense that it’s 2 minutes for everyone else 😅
@@Goofy_Thief Einstein's Theory of Relativity is what you are looking for. Time is relative and high speeds or intense gravity will speed up time. It's been proven multiple times with atomic clocks and GPS satellites. It doesn't make sense but that's how the universe works.
I like your statement, but I wanna partially dispute it in good fun. Unless your consideration of death is like brain death, I’d argue there have been plenty of people that were clinically dead but got resuscitated and lived to tell their tales. Does that not count?
@@Anonymous51701 All souls decide what life or destiny they going to have prior to birth. So, your comment is pointless, shows huge amount of ignorance.
There are a lot of things that don’t make sense to the normal person like you and I. Physicists use complex equations to figure this stuff out. You can pretty much take their word on anything space/time related.
you gotta listen to the wording "distance shrink from your perspective" but the actual time is still occuring so you would get somewhere and it would feel like it took x amount of time but in reality from the perspective of the non observer you still took the full amount of time to move from point a to point b and then return to point a
if an object travels at the speed of light, its mass will increase exponentially! The speed of light is measured at 300,000 kilometers per second (186,000 miles per second) If we have the ability to travel at the speed of light then look at this carefully, there are just about 31,500,000 seconds in a year, and if you multiply this by 186,000 (the distance that light travels each second), you get 5.9 trillion miles (9.4 trillion km)-the distance that light travels in one year. So, it will take you one year and two/three months to reach one light year.. so 1 million years would have passed on earth if we travel to another planet 1 light year away but for us we would age the time it toke us to travel to the planet which if using the example above it would be about 1 year and 2/3 months. ... Atleast that's how I understand it but I could be completely wrong 🤣
@Anthony-cp3sm I don't think it would slow your aging yes you would only be traveling for 1 year but the amount of thermic expansion & thermic decay your exposing your body to by moving that fast you would age the chemical half life of compounds in your body causing a massive buildup of byproducts in your body likely killing you also if your moving that fast the g force alone would prevent your blood from circulating so many factors would cause a human to die if they went that fast
Wow. As someone who’s watched a ton of videos about astrophysics over the years I had no idea particle accelerators were so fast… I thought the speed of light was an abstract concept. Crazy.
Accelerating particles to the sped of light is literally the main purpose of these things. If you let particles collide at this speed you can observe all kinds of exotic matter and learn more about the origin and structure of the universe.
Brian Cox along with Sir David Attenborough are both in my opinion pure legends whom is alive whilst I live on this globe. 🌎 😊❤. They both speak facts without complications. Kudos to both 👏 ❤
Can you just imagine gone for 2 min and it's 40 million yrs later...how do you even comprehend the world you'd meet that has evolved 40 million yrs ahead of you🤯
and they would have already far surpassed what you did many times over. Possibly even found a solution to do it without insane time dilation lol Madness
That world would have long passed. The world you would have arrived would be so strange to you as the world that existed 4 million (not 40) years before you were born.
@@charlespancamo9771 we could never travel at 99.9999999% of the speed of light because we have mass. Inventing warp drive would solve that issue, because you wouldn't attempt to travel at such speed. You would grab space as a blanket, pushing what's ahead of you behind you. That technology is science fiction. But it is more plausible than the fictional scenario (for educational purposes) of a human attempting to travel at 99.999999% of the speed of light.
That is so interesting because on such time scales humans will inevitably grow apart and in millions of years we could literally be different species with different intelligence, culture and knowledge.
The likelihood is real that by the time you got anywhere, you'd find someone else had beaten you there by developing faster travel in the millions of years it took you from an outside observer's frame of reference to get there.
The game starfield did this which I thought was cool af, an earth colony ship set off to a new planet but why the time they got there the planet was already inhabited by humans who invented a faster way to travel and had been on the planet for generations already
That's assuming that the humans left behind aren't killed by a major calamity or war. It also ignores the FTL civilization doesn't try to intercept the generational ship and tows them to the planet. Their path would be very predicable since you can't have any deviations or you would miss that target solar system completely.
This was an Einstein theory. However if these protons are moving that quickly on earth. And we can watch them travel at that speed with tremendous changes in time. Then I need more context to why doing that in the fabric of space would be any different.
Makes perfect sense to me also he's wrong andromeda is 2.537 million light years if you'd travel that close to light speed it'd take you well look at that 2.537 million years to get there idk what he's on. So you'd have to travel faster than light speed to get there in 1 second which with constant acceleration be achievable. 186,282 mi/s. Go 2.36 * 10^22 miles per second and you'll get there in a second is it possible we'll good luck trying to stop unless you can be caught in a tractor beam
@@remix122it takes light that much time from our pov. But in light pov time doesnt work the same. thats why we would become too old on earth but the guy on speed of light wont. 🫠
Gravity affects space time. If we travel at the speed of light we experience time differently than those on earth. We would travel to the andromeda galaxy and it would feel like a few minutes for us but to those still on earth millions of years would have passed. Because they are experiencing space time differently. we perceive time differently on earth because of how gravity affects space time. If you’re traveling speed of light space time doesn’t affect you as much. At least that’s how I understand from all of these physicists talking about it.
Do you understand it? How does the proton feel like it's only going 4 meters? When it's going 27km? Why would 4 million years pass if it took one minute to get there? Does time move differently for the person moving at the speed of light? Does that mean it didn't actually take one minute to get there (for ppl who saw the craft leave from earth)? I don't get it.
Well, mostly and that excludes the ending of course. They did "dumb it down" a lot, since they felt that an accurate depiction would go over the heads of the avarage audience.
In our experience, it follows that if we were to travel at the speed of light, we could traverse the entire universe in an instant. Logically, this leads to the idea that the universe exists both outside and within us.
So in other words if I were to build a spacecraft that traveled at 97-98% the speed of light, and spent about 200 biological years at that constant speed. I could theoretically see the end of the universe. Seeing the stars fade out and flying into a blacken void forever until my body and ship disintegrates via entropy.
@@johnreaper4525 ummmmmm would you really wanna be around for the death of the universe? I mean at that point you would just be in a black nothingness.
Why though? Let’s make this easier. If it takes an hour for you to travel 100km in a car while earlier it used to take people by walk a day and half. And one day you traveled those 100km and came back in 2hr. Even for the ones back where you started from would only have 2hrs of time pass? Why are we confusing the distance travelled and perceived time taken to actual time taken. Even the collider example that’s called out, though it covered it as 4m, the time it took for it to cover it, let’s say 1min is the exact time that’s passed for the observers outside. It isn’t as if the observers took the entire time of day 70m travelling time to see the result. Am i missing something?
This only happens at relativistic speeds. The kinds of time dilation that we humans could notice would require travelling at a good fraction of the speed of the light. Getting any kind of matter up to that speed is way beyond our capabilities today. However not for machines. Our atomic clocks are easily sensitive enough to measure time dilation at orbital speeds. GPS literally wouldn't work without it.
It's not percieved, the faster you move through space, the slower you "travel" through time. This is because the total of both "speeds" needs to equal the speed of light. Of course, to be noticable, you'd need to move at a large % of the speed of light. You can also intepret this effect as the distance of your journey shrinking. It makes no difference which explanation you choose, the effects are the same - you can travel the stars in mere minutes, but to the rest of the Universe, as much time passes as light would take to make the same journey. Time is relative to the observer, thus relativity.
You know, i like to think in my mind, that Warhammer universe is real, and since humans are losing the war with aliens, they are sending "pods" to different earth like planets, and allow the population to grow. For them the pod travels for a few minutes, but for us its millions of years. SO when the population of the earth-like planet reaches lets say 100 billion, they come back to collect all the MALES from each earthlike planet, to join the inter-galactic war with the aliens, that are multiplying way faster. We are "alone" only because they are waiting for the population to reach a certain number, and there are thousands of "earths" around, with humans on all of them.
Everything is designed and meant in a way for us to never find out. As he said, you will never be able to tell people what you saw. There is a bigger creator and only he knows.
This is one of the reasons as to why wormholes are quite interesting. They're folds in space, rather than a top speed highway. Which means you don't actually go a big distance faster, but rather you take a shorter path at standard speed.
I want to listen to this dude more often, this shit blows my mind.
Some excellent documentaries from him here on yt.
Brian Cox has be communicating science for years. I'm sure there is plenty you did see from him yet.
@@PepitoStyleMCmf rogan chimps out on dmt and spergs out about existential crisis everytime he got a qualified scientist on these days, i listened to this pod, cant hear shit rogan interrupts and derails the convo like hes talking/ has an expertise in the stuff Cox is talking about
Same, what's his name??
I agree. He used to sound batsh!t crazy to me when I first started listening to him. And the more I learned as I listened to many other geniuses, the more I could piece together what he was actually saying. And I’m no moron. Brian is a marvelous genius, and we are blessed to listen to him, even if he sounds like Greek to us. In another century, or two, I hope that his intelligence sounds like common sense to the human legacy that is to come.
"is forbidden" one of the most ominous and haunting things ive ever heard from the space talks fam
It's pretty much the hardest limit in the universe. Nothing can go faster than the speed of light for any fixed frame of reference.
What happens in Andromeda, stays in Andromeda.
It is forbidden with the current knowledge we have of physics and technology. ;)
@@fabiancomepapasit was a play on words saying someone couldn’t if they’d even want to because of the compression
It's forbidden in the sense that you can't really relay the info
"I'm back from my space journey guys!"
"Guys..?"
*earth being just a wasteland*
@@mustafahassan7781or paradise
Already is @@mustafahassan7781
*"'':#¢eft4-/_$@&-(5323_+(+)(+;;!?&_$
Language of the future!😂
lol!
Imagine if every teacher in the world would be this inspiring and interesting to listen to. The education levels we could reach would be astronomical!
tbh i thought distance got greater if you travel towards something . this is increadible knowlage.
who would have thought the distance got smaller if you travel towards something, this is just mindblowing, this guy deserves a nobel price.
Astronomical is the perfect word to use 👌
Yeah none of that is real and he is a fraud, just NDT and all the other celebrity "science goys", it's inspiring bulls t, but bulls t nonetheless
Imagine if we paid teachers enough to where people that intelligent would want to teach
Except that would be a “problem” because the government doesn’t want everyone to be smart, they want everyone to get out of school and become mindless workers to make money off of. Which is why the school system is both bullshit and rigged
Explaining super complicated things in such a simple manner is a mark of high intelligence.
It's the art of effective communication. There are plenty of geniuses who can talk perfectly well to one another but are so saturated in their own environment They have a hard time speaking to others outside of their collective
Huh?
@@Caiphex”if you can’t explain something simply, you dont understand it well enough” are you sure that’s true? or are you just advocating for someone you’ve never met.
One of my best friends does this to me with everything insanely complicated he understands. Great teachers parents usually teachers which sucks
Fr
Brian Cox always looks so incredibly amused by the science he’s speaking. I can’t help but smile myself, when I hear him.
@@okomanOr, maybe people who dedicate this much of their lives to learning and teaching do it because they actually enjoy it.
But I’m sure you’ve personally already dismantled quantum theory right?
@@okomandude wft?
@@okomaneverything he said is widely accepted to be true though experimentation and reproducibility, your callous avarice and apathy towards thousands of hours and countless sleepless nights spent trying to solve questions your feeble mind dare not ask is truly ironic, for the podium you built yourself to stand on is as broken and ill constructed as your opinions.
@@okoman found the flat-earther
@@PTSDwithMEthanks for saying it for me🫡
The man spoke for 1 minute and in that time he opened a whole world of understanding to me
Hes a very good speaker.
I dont belive on These Theorie. It is just a Theorie and nothing Else. Nothing Cant stop the time even not forrward or backwards. Baumgartner it is jump Form there and Look he is sam old than before
If he says it will take one minute, so it will take two minutes to go there and coming back. So it will pass only a couple of minutes. Right?
@@jarceoja That's the thing. "How long it takes" is relative. If you traveled so fast to Andromeda, then for you it would only take moment, but for the rest of the Universe, millions of years would have passed. This is why it still takes years for light from nearby stars to reach us on Earth, even though from an individual photon's perspective, no time has passed at all.
You always (even now) travel at the speed of light through spacetime, it just that right now almost all of that is you traveling (forward) through time. However, if you travel through space faster, then your "speed through time" is reduced, so that the total is always c. This is why this effect happens.
@@jarceoja A couple minutes for whom? Relativity is all about looking at time/space from different observers. For the guy in the spaceship only a minute might have passed, but for the people watching the ship from Earth, years could pass.
100x better than Neil. Informative, good communication of interesting facts, and no ego. Tyson just sounds like he thinks he’s talking to children, while explaining the most basic, mundane, and commonly known facts. This guy is passionate without sounding arrogant
I’ve literally been looking for this exact comment. ❤
I think all Newtonian fans speak like that 🤔
I knew someone would use their own diskike of Niel to try to turn this into a competition. When both of these men are awesome and there is no competition between them. You don't know Neil and you don't know Brian. Shut. Up.
I agree!
Niel is for people with average American education, Brian is for people with average British education.
I met this guy at Manchester University back in 2001. He was drinking a beer in the student bar.
I had no idea who he was but the friend i was with made it absolutely clear to me that he was an incredibly important physicist.
Here i am over 20 years later watching him being an absolute boss on RUclips.
20 years ago he hadn't even become a professor. Was your friend a philosophy nerd who read his PhD thesis?
What a weird thing to lie about for likes from anonymous people on youtube
“if my grandmother had wheels she would have been a bike”
@@RhysWilliams-u3o He wasn't a professor in 2001 but he was well known on the Manchester University campus as an extremely sharp mind. He earned his bachelor of science degree in 1991 and a Doctor of Philosophy degree in 1998.
I'm 42yrs old and don't need to make up stories to get validation on the internet.
@@cameronferazzi2555 I'm well aware that your generation are desperate for attention and "likes", but don't project that nonsense onto others.
The way he is so happy on how he explains these things just show the dedication and hardwork this man has put all this years
Nah, he's just glad he can share the burden of knowledge and existential crisis😂
He should start his hardwork over because he is the furthest from being a scientist. What he says is not a fact and you could do the maths alone if you even tried to verify this information.
In a minute at lightspeed (about 300 000 km/s) you can travel 18M km, you would need at least 3 to 10 minutes to reach Mars. Andromeda is 2.5M Lightyears aways, you would need 2.5M years to get there at lighspeed.
@@ricksanchez6125In this rare case, he is correct. I am a qualified Physics teacher. Relative to earth it is indeed a 2 million (+) journey to Andromeda.
But as speed tends to approach the speed of light, time dilates closer and closer to zero . And so do relative distances. That's Special Relativity.
Nevertheless, I call this kind of scientist,
"Popular", and much of his "science" I call "popular science" because he also speaks a whole lot of nonsense about things that are pure conjecture which are also unproven.
"Popular Science" is the diet of garbage we get fed on TV "science" shows. It reflects the pseudo science taught at school ahd university. Not to be conflated with real science which is substantiated by objective experimentation and observational evidence.
Objective science and Theoretical pseudo science are poles apart.
And there is a reason why theoretical physics IS NOT experimental physics.
Experimental physics is grounded in hard work and reality. Theoretical physics is grounded in clever founding arguments and mathematics but never demonstrated by experimentation.
Also it should be understood that mere "interpretation" of physical phenomena is not the same thing as solid fact.
Observations which consistently support hypotheses lead to theories. But all theories are open to further experimentation and observational evidence.
So objective science grounded upon real experimentation IS not popular science built upon conjectures and imagination and "clever" arguments.
Clever sounding arguments are not facts. Yet popular hypotheses like big bang and biological evolution are not grounded in fact. At most, they conflate real observations with a pile of human speculations and "clever" arguments, not experimental fact. The experiments carried out are highly depended on extreme bias and interpretation. This is not how we do objective science folks.
And why do we try to silence the multitudes of PhD scientists who profoundly disagree with the transient popular pseudo science paradigms and hypotheses which exist for the moment?
@@ricksanchez6125 Time and space is relative, that was his whole point. From the perspective of the Earth, yes, it would take 2 million years, but from the perspective of the spacefarer, it would take just one minute, because the distance is much shorter.
@linuslundquist3501 still nonsense, the space doesnt really shrink and the distance is not shortened. Relativity will not reduce million years in a minute, even If we use what he said about protons, it would feel like thousands of years. Anyway there is no way to measure it so there is no proof.
It is amazing to listen to somebody that speaks with so much passion and delight of science and at the same time makes extremely complex concepts so fun to listen to. What a beautiful mind.
You never took a science class?
@@Jayblazey you never read his comment properly? 🤦🏾♂️ And comparing Brian Cox to your science class is actually wild 💀
That’s why Brian Cox is one of the best! He is never not smiling when he is explaining these things.
Spot of tea with horse riding traverse
You have to take 4 years in your light year time to come back to be able to tell others you left
Essentially, what he is saying is that time is relative to the person experiencing it. So what feels like a minute to you will essentially actually be or million years to someone else. This is why time is a construct and why they say time is the fourth dimension and that it can technically be bent is because of that fact.
I have a lot of thoughts about this because is time a construct? Is it a literal thing or a literary device of science? For most of my life I've understood time as not being real. This was solidified by physics classes and Einstein. Time was obviously just a function of the movement of energy, a ripple seen on the surface of a thing, not a separate flow. But what about space? Is space real? We inhabit it but are we sure of its limitations and properties? We believe we can measure space but are we measuring space or are we measuring mass and volume? In the same way a regular cycle must occupy "time" must not mass also occupy "space"? That's why at this point in my life I'd say the spacetime continuum is both a construct as well as a synonym for the universe.
My original comment I started writing was this: That's not why we say time is a construct. We say time is a construct because it just obviously is, and I don't mean this condescendingly. There is no way to view or measure something known as time. It's a frame of reference we create with respects to something exhibiting a regular period. If something exhibits a very regular period with no variance, it creates a strong clock. The most primitive clock, a sundial, is just a measure of the sun's position in the sky and the angle of the shadow it creates. The most powerful clocks we have use devices that measure slow radioactive decay or the spin of microparticles and other such things.
All measurements that include time can replace the time vector with a period. But it's difficult to explain cycles, periods, oscillations, vectors, etc, without talking about time. I'd wager we could just as equally say space is a construct. But it's difficult to talk about distance and volume without imagining that they occupy space. Just like it's impossible to imagine something existing without occupying time. Though I think it's easier to imagine something frozen in time since our bodies are exponentially less stable than many minerals. Therefore we perceive many things as being frozen in time naturally.
Here's my though experiment. If you were frozen in time could you still think? If you were frozen in space could you still think? If you're truly frozen in time, there's no neural firing happening in your brain. But the same is true for being frozen in space. If you're completely prevented from moving at all in space, you can't fire neurons either. But here's my follow-up question to help us expand our understanding of how we think of time and space. Do you die? Well, my intuition says, if this were possible, that being frozen in time wouldn't cause you to die if time really exists, as your processes just all go back to normal when time resumes. But if space and time aren't a continuum, and space is real, then being truly frozen in space means your death. And this actually sounds obvious to us. The vacuum of space is freezing. But it's also boiling. Heat doesn't travel through space, it travels through mass.
Sorry if I got to rambling a bit here. I just wanted to say space isn't any more real than time. But it's very difficult to functionally communicate without references to spaces and times. From my perspective time is like a shadow cast by the universe's energetic activity. If there's no energy, no observers, there's no time. I think there might be, if we're lucky, deeper understandings of energy for us yet to learn that may lead us to even more eldritch and wonderful technologies or tragedies someday. I feel at least confident that energy and mass are real and that's already very magical to me. My brain needs to imagine some kind of spacetime grid for them to exist within. I'm comfortable calling this "the universe".
We have laid waste to cities by unbinding the energy it took to smash atoms together in stars. We fuel cars by unbinding sunlight from old carbohydrates. Who knows how we might discover to manipulate energy and mass in the future to our whims. I hope we learn to tesseract to some degree someday lol, to fold the grid where we can avoid having to move through it. Or even freeze time, so people can explore the depths of the universe without having to move at the speed of light. That's just the best/closest way we know to freeze time currently.
So 1 minute on a timer to get there, 2 minutes round trip still wouldn't be 2 minutes the same as on earth? What's the difference between "perceived" time vs "measured" time.
@@CMICthis is why it’s called the theory of relativity. When an object with mass approaches the speed of light, the apparent distance between objects shrinks. This is because the energy/mass involved to move at this speed warps space-time. So you are obviously moving very fast so now the shorter distance is traveled even sooner. However to an outside observer you are essentially just traveling at a set speed for a set distance since their space-time isn’t being distorted. This means in one scenario the space is warped resulting in faster travel and the other no such warping occurs so the travel occurs slower. That’s why it’s important to note when you warp space in this manner you also warp time. The two are linked so to change one is to change the other simultaneously. Put another way, instead of the space between the objects having shrunk because of the distortion it’s that the time is decreased instead.
@@SYKOfun
So, does this mean that the distance is actually being shortened or it feels like it’s being shortened?
Feels wonky. I can't imagine a spacecraft moving at near the speed of light away from the Earth without also thinking about the Earth moving away from the spacecraft at near the speed of light, and thus experiencing the same dilation of time.
Researching the matter turns up a discourse on "inertial frames" but it all sounds like jargon to me.
After watching Brian Cox explain the depth of physics, it strikes me as crazy how we also live at a time with people arguing for the Earth being flat
Ignorace has destroyed societies before and will again.
yep !
just watch a ship sail away and it will vanish in front of your eyes. not very hard to understand !
We don't really think so. It is attention seeking people who want to feel important and us shining a light on them(giving attention) and laughing at the idea. Spreading the thought that this is a more common thing than it is.
If it wasn’t flat we would simply fall off.
@@bobhoskins124is this a joke
“It’s never boring listening to someone that genuinely knows a thing or two. It’s far more magical if one of them is how to tell a story”
Brilliant 👏🏻👏🏻👏🏻
It's all theory, folks, calm down.
@StarcatMkV it does not make sense cause if I have travel very fast I would be 2 minutes there and back.
It’s even better when they form a sentence.
@Riley_rolo for you yes, for everybody not with you, 8 million years would have passed in the time it took you to go 4 million ly twice
Solution: Accelerate the entire solar system to 99.99999999 percent of the speed of light
*Gets disintegrated, reduced to subatomic particles.
what if u end up near black hole and story ends.
@@rajramteke3605thats why he says in principle
@kryptoniridium Can you please elaborate on why that'd be the case , although I didn't think that the first idea is neither practical nor possible , I just want to understand why would an attempt to concretize it would end up in that .
Just use concentrated dark matter
So the light from our sun that is going the speed of light takes 8 minutes to reach the earth, takes only 1 minute to reach Andromeda?
Distance of light travel from the Sun to Earth: Light takes about 8 minutes and 20 seconds to travel from the Sun to Earth. This is because the average distance from the Earth to the Sun is approximately 93 million miles (150 million kilometers). Distance from Earth to Andromeda: The Andromeda Galaxy is much farther away than the Sun. The distance to Andromeda is about 2.537 million light-years (or about 2.4 × 10^19 kilometers). To clarify, A light-year is the distance light travels in one year. Since light travels at about 300,000 kilometers per second, it covers around 9.46 trillion kilometers in a year.
Given the immense distance, light from Earth would take about 2.5 million years to reach Andromeda, not minutes.
@@SonxWukong so the video, which is badly cut, is false. Just as I thought and all these bot comments.. I'm done with shorts
Brian Cox always fascinates me with his discoveries and his knowledge of our vast universe. Probably my favorite physicist to listen to bc of how excited he is to talk about things. Never a boring conversation
I could listen Brian Cox talking for days and no even be tired of it. Great guy
he's so hot 😭😭😭
Everytime i see his name on the podcast, i get so happy
Then you would only listen to false information, seeing the nonsense he says here
@@ricksanchez6125 wait... what?
@@danirpgnerd I answered many comments here to prove his maths wrong but just ask an AI and you will see, fact checking is important
Essentially it’s a one way trip to spread humanity.
What do you mean with this? How do you spread. And will people live longer when they would travel the galaxy and beyond?
He means that for humanity, colonizing other galaxies is possible, but what was on earth, after you left, may no longer be suitable for the name "humans"@@patrickdegraaf5433
@@patrickdegraaf5433i dont know how much more context you needed lmao
Spread humanity = bringing human eggs and sperm samples stored by donators to another planet in another galaxy to breed and potentially have a new life
Why is that so difficult
No,stop giving the horny billionaires ideas
Only it light speed. Within our solar systems it's certainly possible. And you could spread humanity.However you wouldn't be able to come back.
This is why the human race may never encounter another alien species. Their arrival timing to earth has to be perfect for us to meet them.
assuming they can only travel the distance to earth
By our current understanding that is
I appreciate his frequent usage of "in principle", it's refreshing to hear an expert who's being REALISTIC and not exaggerating science with pseudoscience to impress people.
So are you saying that realistically, there's no truth to what he's summarizing? Because there are models and examples like the hadron collider that give good freedoms to this Theory So downplaying it I feel is kind of meaningless along with using the word in principle if there's no concrete evidence other than a potential theory that may or may not be achievable. I say this because there's plenty of phenomenon that give or make. It seem like certain theories are possible, but this is assuming that we have an even stronger understanding of That gives strength to these theories Even function the way we believe they do
Theory and practicality/engineering are two very different things. Warp drive of a spacecraft is in theory possible, but it requires the energy conversion of the mass of Jupiter to achieve. Also, science becomes pseudo-science during every paradigm shift.
There isnt. Distances do not shrink. He is talking about perception of distance as the traveler based on theory. If you traveled 300LY away in 3 seconds, stayed for 3 hrs, then returned in 3 seconds, exactly 3 hrs and 6 seconds wouldve passed on Earth. If you blinked there and back in an instant, it would seem like you never left, because your colleagues' perception of your light and sound would not register the change before you were back. Same for your own perception. Nothing he just said is real. It's strictly intellectual exercise. We know this isn't real already. @@HeraldoftheMEME
this is all theoretical stuff, it’s like me having a really good idea and writing it down and others study that idea and explain it. It may be the most realistic sounding idea, but it may have no existence in reality, and hence it’s just scientific mathematical fantasy. Unless it’s testable and observable and can be replicated then it’s just a really good theory, and nothing more. I agree, I like his use of “in principle”, gives him humility where other scientists use words like “we know” or “it’s known”, “it’s scientifically proven”.
@@sethgoldberg3300 then how do you explain even there being a return? How does it make any sense that we would even be able to travel such a far distance and still be alive to tell the tale... No one still alive on the way back... There is no perception. If there is no one to perceive the experience, does that make any sense? Because one thing we haven't figured out especially when it comes to traveling through space and time is aging so this Theory on face value doesn't make any sense which again make the term "in principle" meaningless... We're not even close to understanding and figuring out indefinite or very long-term suspended animation. I mean to be fair. Time isn't exactly how we perceive it and considering the new discoveries with our most recent with the James Webb telescope according to Michigo Kaku we have barely scratched the surface of space exploration and how we understand the expansion or the way in general, the universe function assuming working series is correct
This is why the idea that extraterrestrials are visiting Earth is highly unlikely. People can't comprehend how vast our universe is.
Exactly
Only if they travel by ship at the speed of light. If they have the technology to create wormhole"portals"and bend spacetime, in principle would be possible. But it most likely would be detected by our technology.
@@MissBabyNe Yeah, but how would they know that we're here?
@@tims8603 Von Neumann and Fermi had your exact thought and came to the infamous two conclusions: we are alone which is a frightening thought, or we are not which is an even more frightening thought.
Your question would easily be answered by Von Neumann drones or berserker drones. He is the father of modern computers and game theory (a part of science where what-ifs are played out). Aliens don't need to be organic
Haven't you ever heard of Martians👽
This man just answered the entire problem i was having understanding the 4th part of time in 60 seconds thru his explanations man, this guy is a treasure
I genuinely love Brian Cox. I love that he loves science the way he does, that he can explain such a complex thing in such an easy way to the untrained mind. I don’t think I’ve ever watched anything of his and not left it thinking.
You come back 4 million years later consider yourself an Alien Mr, ma’am 😂😂
Lol True because if interstellar travel was mastered eons ago we wouldn’t recognize or accept anyone coming back and claiming the earth is their home.😂
So thats why we haven't seen aliens yet. They're still heading out 🤔
Perhaps what some call UFOs are actually representatives of our planet from centuries ago?
Maybe earths inhabitants already have created this technology. They travelled to distant galaxies and come back but so much time has passed that the earth has gone through several evolutions and the aliens that some believe have visited earth are returning explorers?! 🤯
The very concept of first planet of the apes movie.
Everything about Brian is soothing, calming, tranquil, and you immediately get enthralled by what he has to say.
That's why appreciate the accessibility that scientists have gotten in the recent years. the more you learn about this kind of stuff, the more it makes nature and the law of physics feel like a living thing in the sense that it seems like it rigs itself any way it can to keep us from learning its secrets... and if we do, there is a penalty... you lose your home and time as you know it... you can't travel back.. the universe expands so fast that home isn't an option any longer. its insane when you think about it.
God I love that there is very smart people like him and Neil out there to share with us these wonderful lessons.
Don't stain this guy's humble character with the Narcissists arrogance that is the whole of Tyson Chicken.
Neil aint as Smart
@@JohnPaul-ol5zlyall really bastardized the definition of narcissistic... Egotistical little bitches
Neil is a clown
@@baron4486he is smart. he’s just super arrogant which makes people think he isn’t.
Why why why did I not have teachers as enthusiastic, intelligent and pleasant as Brian Cox, I'm positive I would have had a whole better happier life, Neil deGrasse Tyson is another, brilliant, pleasant and interesting very clever man.
Because its doesn't pay well.
That’s like watching pro football and being like “why didn’t I have Tom Brady as my high school football coach? I would’ve been so great.”
There are plenty of reasons why your teacher wasn’t like him, but one huge one is that he is top of the class, people like him don’t just grow on trees.
If they made what he made I'd bet you'd have a bit more enthusiasm
Tyson is the smartest dumb guy ive ever listened to.
Half a mil per year would be great pay for him but then fees will be 20k per year per student for schools.
That is genuinely terrifying to think about.
And equally interesting !
Scary at first, then it's beautiful.
@@publicstaticvoid1010Thanks, Dream!
I'm in constant fear of accidentally traveling at 99.9999% of light speed through the Andromeda Galaxy
There's nothing terrifying about it.
This guy is so INSANELY smart and interesting. I'd recommend any podcasts or speeches that this guy is a part of. He knows what he's talking about...
The more incomprehensible the subject, the bigger Brian's smile!!!!
This comment made me think about a scenario that'd make him laugh like the joker
😂@@amirkhan-fp7qc
I could listen to Brian talk forever.. so relaxing and amazing info.
Brian Cox is the man.
And he was also a famous pop star in his youth too… the man was born to greatness in every aspect of this lifetime.
Calling him a "famous pop star" is a real stretch. He played keyboard in a band who were basically one hit wonders. He wasn't exactly a "star".
the thing i love about brian cox is that he talks in a way that everyone can understand
There is nothing to 'understand' in what he says, it is simply factual
@@Ed19601something being factual does not mean it is easy to understand though and that’s what the comment is about. this guy explains things in a way that the general public wouldn’t be confused
FO!
This man is so well spoken and good at explaining plus he has a library of knowledge in his head
If you ever see him in person, it’s very apparent he is operating on a level far above anyone else that i’ve ever met.
@@CAkidTalks definitely
Explaining such a complex topics in such a simple manner , TALENT !
except its not complex and makes no sense at all... its a fantasy which isn't real and never will be and mouth breathers accept it at face value.
For some reason this doesn’t make a lot of sense to me, because if it takes a minute at near light speed to get there, and a minute to get back, and millions of years pass. Are the minutes longer by perception ? And if so how can we call them minutes when the earth, the place we belong calls it 4 million years?
Because "a minute" doesnt exist. It is simply a word humans have created to represent something on our specific planet :)
I feel like the issue you’re having is because you’re thinking of speed in a way different than what he means.
In this case he quite literally means light “speed”. Light in this case is what is observable, or will become observable. Speed being the measurement of adding time and distance together.
If you were to travel at light speed, time would completely stop. Light does not exist in time because it’s entirely unaffected by gravity as it has no mass. We cannot travel at exact light speed because we have mass and are affected by gravity, which also affects time dilation.
In this case here, time and distance become absolute constant measurements to achieve speed. So even though you traveled 5 million light years in a minute(relative to YOU), both the distance and time still existed differently to the outsider observer because that was the only way that it would be able to be perceived.
To the person traveling, their perceived time was not changed, but to the person observing, they were slower relative to the traveler. In this case, time is inverse based on velocity. So the faster you go, the slower time has passed relative to the “slower” observer. In the case of light, it experiences essentially teleportation if that makes it make anymore sense. To light, it’s both admitted and absorbed instantaneously, so you get light speed which is the theoretical maximum of speed as it both starts and stops instantaneously relative to its observable space.
It experiences all of the distance and none of the time.
@@james3003 Very thorough and nice explanation :) Though a slight disagree on the last part: "It experiences all of the distance and none of the time."
It experiences neither time nor distance, as it is impossible to travel any distance if no time is passing. Relativistically speaking, from the perspective of a photon, all distances are 0, because no matter where you go, you arrive instantaneously.
Restricted by knowledge we are.
The greater understanding awaits.
very true
Best of the bunch!
Your Statement Alone is Extremely Mind Bending 😊
Okay yoda
Love Brian Cox. His recent Solar System series was mind blowing!
if it wasnt for brian cox i would still beleve you get further away from something if you travel towards something. absolute genius.
I want to hear him for 2 3 hours. No matter what sh!t he speaks. His voice is soo sooo soothing ...❤❤❤
u can. joe Rogan, brian cox
For anyone who is confused by this difference in time/length:
As stated in Einsteins theory of general relativity: the only fundamental constants of the universe are the speed of light and the laws of physics.
This means that the measurements of time and length for the same object are not the same for all observers, they are relative to the state of the observer.
Specifically if you want to learn more, these concepts are known as “time dilation” and “length contraction”. Time dilation was popularized by the film “Interstellar” but length contraction is its lesser known brother and the two go hand in hand.
And lastly: the reason you may have never been taught these things are because they do not apply to your life. Newtonian physics accurately describe the motions of everything on earth, and almost everything in our solar system. It’s only at great speeds or great distances where these differences need to be taken into account in order to make accurate predictions.
Does it make sense to us? No. It shouldn’t. Our brains evolved with a fundamental grasp on Newtonian physics as that’s what applied to our lives, but the true nature of the universe is so much more complex and confusing than our brains can comprehend. Same idea as our brains being incapable of imaging a trillion of something.
Well I guess I’m bringing all my scientist friends so we can experience it together :)
tell me you gonna have a dmt party without tellin me you gonna have a dmt party
If you had one he would tell you that it's not how it works and that you should not listen to that guy just because he has a cool voice
@@ricksanchez6125 hes a fully qualified physicist and literally teaches it
@@gamegladi8or669 Then 2 options, either the one that made this video cut what he said leading to nonsense. Or he is a poser. Because there is no way to know for sure that if we were to travel at light speed for a distance of 2.5M lightyears, we would feel like the travel lasted 1 min. It would take more the 4M years to go and come back because one way takes already 2.5M years even at lightspeed. Relativity would shorten that span from our perception but not to a minute, this is ridiculous.
Bro imagine coming back 4 million year later I'd be fine with like 2 or 3 hundred but 4 million way to far in the future bro that's long enough that humans would have probably evolved by then and when I got back I would probably be treated like a caveman and shoved in a lab to be studied that's also assuming humans lived that long in the first place for all I know I could be coming back to a nuclear wasteland
Hell, even after 1-2 hundred years it would be difficult to communicate with other English speakers, as the language is always evolving. Also, society, culture, and technology would be unrecognizable!
Or the humans are gone along with the pesky radiation and it's a paradise
The craziest twist of getting there in the first place likely means when you arrive you'd probably be met by humans from your perspective future having been there for a very long time - celebrating the first person to set off finally arriving!
Those millions of years provided so much time to improve the understanding and technology for space travel to have come up with some sort of wormhole method to get there long before you.
Actually, arriving and being met with nothing would be terrifying sense of foreboding over what happened back home.
@@ShaimingLong Just a tidbit: wormholes require exotic matter and so far we were not able to create it. The now in construction LLHC tries to create some. The best we at current understanding of physics can create that is FTL, is the new warp drive some German post-grad proposed. And it has its own can of worms like the time paradox and its requirement of 2kg of antimatter to travel to alpha centaury
You really think humans will survive for millions of years after this. Wishful elitist thinking.
So to travel through space is to time travel. This really blows my mind, as well as the fact that whatever planet we'd be traveling to would not be the same as what we observed when we left.
We could see a hospital planet from Earth, set course, and arrive at a massive black hole.
I don't know the why's, but time and space are inorexically linked, if you have one you have the other, a space with no time is meaningless, and time with no space is meaningless. This is also why, when space fuckery happens around massive wells of gravity, time gets all fuckered out too
Damn, imagine the cost of an ambulance ride to the hospital planet
😂@@Toxxenn
TRUE. That's how our physics demanded.
Just like if we on Earth (Sun system) wants to go to one of planet in Proxima System whics is The CLOSEST system from our solar system. It will takes 4 years in 100% Speed of Light.
And when we want to go back, it will take another 4 years in 100% speed of light.
In that scenario, we are just spend of full 8 years just to going and back from earth and Proxima Centauri
8 years is still a long time in human time
The faster you move through space, the slower you move through time. Light from the stars spent thousands of years to reach Earth for us to see it, but to the photons? To the light itself? A mere instant. Relativity.
Such clarity !! Thank you.
My head hurts now, from trying to wrap my brain around d what this bloke said.
That's because it's rubbish
I don't get it either. It's one minute. You got there fast, with the speed of light, why did it take 4 million years?
@@cavestudios8944 because he lives in fantasy land and loves to make stuff up to convince dumb people of things that are simply just not true, just because he claims some physics equation said it was possible, it does not mean that it is. And obviously it's not, and never will be
@@cavestudios8944 The time you experience slows down exponentionally as you travel closer to speed of light. Thereforei, in reality 4 million years might have passed, but you would experience only a minute of time. Your own time slows down from your perspective. We have already experienced this minute time difference between clocks on earth and on our fast moving satellites.
@@cavestudios8944 ok let me explain
when you travel at the speed of light or close to it like he said time shrinked but its from the travelers point of view
but for others times is still same as before
which means for example we send you in a spaceship at a speed of light to galaxy you will reach in a minute also it will take you same time to return, but its just your perspective , people who are on earth will still experience regular time 4 million years
This is why development of stable wormholes is a must!
And just like that we've gone from science to sci-fi
@@trolley01Ai was sci-fi, until it wasn’t…
@ And just like that the stuff thought of as sci-fi on Star Trek became reality. What we perceive as sci-fi today could well be reality through science tomorrow.
@@Tjcol333 ai has been out for literal decades lmao
@@lydellackerman800 You know those things aren't actually real Artificial İntelligence right?
Is impossible: ❌️
Is forbidden: ✅️
I can listen to him whole day and still wont get bored❤🙏🏻🙇🏻♂️
If we warped space to move us we wouldn’t actually be travelling the speed of light we would be moving our section of space and so we wouldn’t move at all technically.
Example: if you pick up a piece of a puzzle and move it across to the other side of the puzzle, the image is still the same and you didn’t change it. The image being time still moving at the same pace, just that the piece of space is moving.
All the other pieces of the puzzle still keep the same image (time). Hard to explain but I hope I did at least semi okay.
My thoughts exactly.
Warping space to move us is worm hole concept is it?
@@LeDrPsycho No, this is another idea. It's the basis for the Alcubierre drive. In general, it makes the destination come to you, rather than the other way around, since the speed of light is only a limit for local movement of matter. In practical terms, it's problems are similar to the wormhole approach - untold amounts of energy needed (on the order of an entire star's lifetime output), exotic "anti-gravity" matter required to stabilize the spacetime bubble for the ship etc. Oh, and there's also the fact that uppon arriving, you'd bathe light years in front of you in enough gamma radiation, to be comparable to a GRB. Fun stuff.
To explain those who say their head hurts understanding this:
Photon: These are what light is made of. They are massless balls with very high energy. They have no mass hence they experience no gravity and when we experience no gravity, Time does not matter to us.
Hence hypothetically if we reach the speed of light (which we obviously cannot as we have mass), there will no time for us. We can "hypothetically" be anywhere in the universe in a blink of eye.
I.e: As we move closer to the speed of light time slow down for us and then it completely stops.
Even though light is massless, it is still affected by gravity. However it doesn't cause gravity, so nothing is attracted to it
No in the blink of an eye light already travels 29,979,245.8 meters. A blink is a very long time
2 inferences can be made from this:
1. Since we have mass and cannot be like photons, he is talking rubbish.
2. If we can fashion a vehicle that behaves like a photon and travel at the speed of light, we will be going so fast from different points and if it takes 2 seconds to get somewhere and two seconds to get back, we would have only been away for 4 seconds (we just did that at the speed of light), and he is talking rubbish.
I'll also add that he has a very well trained facial expression to disarm his audience and make them feel like he isn't deliberately being dishonest but you can choose to believe him and...
@@okoman Lol. He's not talking rubbish, He is talking hypothetically. If we talk about practical physics all the time then physics won't be all that impressive. He's a theoretical physicist, what he's talking is what can theoretically possible. Theory and experimental physics are two whole different branches of physics with completely different jobs
@@LiteralNobody8 Thanks for the input, but the word "blink" was used as a metaphor for instantaneous.
So we'd all have to travel together. No one left behind.
So say we all.
Unless we somehow took the earth with us, when we’d come back from the trip to andromeda, the earth will have still undergone the 4 million year changes. Who knows what catastrophic events could have happened during those 4 million years.
We already do
@Leopar525 true but I mean when leaving earth.
Surely there must be some electromagnetic buble that can prevent that effect that would have made 4 milion years passing not take effect.
A dose of Neil Degrasse Tyson stimulates me, a dose of Brian Cox calms me down. They both do great job explaining science with different intensities!😂
Neil DeGrease is hardly right in a short let alone an interview. if astronomy had a dumbest person award he would be a multi time winner
I could not agree more.
clown
bLACK science man. If a white person says what bLACK science man says it wouldn't even be considered. But since a bLACK man says something its amazing because of the bigotry of low expectations.
Professor Brian Cox is one of the most amazing people to ever live. I can listen to him talk forever.
"andromeda is 2.4 million light years away"
"You can reach there in a minute at 99% light speed"
Didnt understand logics
I think he means that the time goes faster for you when you travel with the speed of light
Same here
It will feel like a minute inside the space ship but it will be a million years outside of it.
No it wont fell like a minute lol@@watchman2011
Time is relative. The faster you move through space, the slower you move through time. Just you though. Everything else still ages just like before.
If I set out on a starship that goes close to the speed of light and travel to andromeda, I can reach there in about a minute (for me), but if the people on earth were to observe my entire trip, they'd see me travel for ~2.5million years.
Things that actually travel AT the speed of light (like light) do not experience time at all. From the light's relative perspective, it was created, and instantly traveled across the entire universe.
A (in my opinion) decent (though not entirely accurate) visualization of time relative to the traveler is a simple exponential growth graph like 2^x. Time on the X-axis, space on the Y-axis. At some point, the line will (essentially) ONLY move on the Y-axis. It has stopped moving through time (x) and is moving through space (y) instantly.
this guy has such a lovely voice
"According to laws of physics, you could live for a million years, IN PRINCIPLE, if you travel at the speed of light or close to it."
No amount of mass has ever or will ever travel at any fraction of the speed of light in a directed manner. May be particles involved in a Quasar, colliding black holes, or some other cataclysmic disaster. But they will never return back to their origin!!!
I think it's actually that the physics processes slow down at near light speed so you're just perceiving the flight as shorter than it is, and it's just like 3x-5x slowdown I think. So you'd be flying to alpha centauri for 8 years but it'd feel like 2. And "in principle" light speed is not as big of a deal, you just need to keep accelerating at 1g for a year, so that's a question of enough fuel. I hate when physicists just go embelishing the shit out of everything as much as they like cause they don't think anybody cares enough to read some.
It depends on what you compare your age with. If you are moving from Earth at the speed of light and your baseline is Earth time, then you are right. However, it seems we live in our like bubble as big as something moving with us at the same speed as the spaceship in which the biological age would probably follow the earth’s years.
However, these thoughts made me think that time is like a feeling of missing somebody even though we don’t move around at the speed of light. The more you miss somebody the further they are from you. The faster you travel in space, time flies faster accordingly for those you have left.
@@bobexass WRONG.
Well its what i understand about what she say lol but i'm probably just d***
Look, high school level physics was difficult for me. I still can't wrap my head around the time disparity when travelling at the speed of light.
@@Simonio8 The main principal behind time disparity is Inertial Reference Frame (Frame of Reference) if you're interested in reading up on it, but if not I can give a quick example.
Imagine a person in cryo-stasis (PersonA) moving between 2 points, and an observer (PersonB) measuring the distance and time of the move. PersonA will experience instantaneous movement with no time passed, while PersonB will measure actual values for velocity, acceleration, etc...
A major principle of Relativity is that a particle moving at the speed of light doesn't experience the passage of time, so from it's Reference Frame it exists simultaneously at every point on it's flight path. But an observer can measure that particles position at any given point in time.
This difference in Reference Frame between subject and observer is the reason you get things like Quantum Uncertainty, Quantum SuperPosition, the Quantum Waveform/Waveform Collapse, Quantum Entanglement, and weird paradoxes like Schrödingers Cat.
@@jeremykeasbey4145 Mate i can understand why someone in cryo sleep doesn't experience the travel time, but that feels like how if someone falls asleep on a plane feels the journey alot less than someone who was awake the whole time. What I dont under stand is how some one would just cease to experience the time all together. Just like I dont understand how he says traveling faster makes the distance shorter. I get that travelling faster would make the journey time shorter but not how it makes the physical length of something shorter.
@@MrSackerson it's due to the definition of the speed of light in Relativistic Terms. A particle moving at lightspeed velocity clocks in at (I'm rounding here) 300 million m/s, but only to the observer. The particle, from its POV, approaches infinite velocity the closer it gets to lightspeed (according to General and Special Relativity). That's the reason e=mc² is such an important equation, and why Reference Frames are such a big deal; because particles like photons that have zero mass have infinite velocity, yet we can actually measure it at 300 million m/s
*a little extra math*
In Classical Physics a particle moving at lightspeed would move 27000m in 0.00009s, but we're talking General Relativity here. From the particles POV, it's moving 27000m instantaneously. It's velocity is 27000m/0s.
When Cox says they shorten the distance traveled, it isn't meant literally; he's keeping constant time instead constant position to avoid an X/0 calculation error.
@@MrSackerson It's not that you don't experience time. If you were on a spaceship travelling very close to the speed of light, you wouldn't notice anything strange about how time works. It's just that a distance that you'd expect to travel for millions of years would be crossed in a matter of minutes, but only by your reconing. It's not an illusion, any clocks you've had with you will tell you the same. However, millions of years have in fact passed for the rest of the Universe.
I can't explain the details of how this works to you without writing a whole book here, but know that "distances getting shorter" is just as valid as "time running slower for the traveller" - you can choose either of those intetpretations and it will be a correct way of thinking about this phenomena. This is why it's called relativity.
Its stupid and useless to even talk or pretend to talk about like it means anything.
I understood every word and none of the sentences.
😂😂😂😂
Great thought !
Yea. I don’t understand it but I do like how do you age 2 minutes but everything else ages 4 million years. If u moved at the speed of light and it takes 2 minutes to go to the andromeda and back would it not make sense that it’s 2 minutes for everyone else 😅
Because he's not makes sense.
@@Goofy_Thief Einstein's Theory of Relativity is what you are looking for. Time is relative and high speeds or intense gravity will speed up time. It's been proven multiple times with atomic clocks and GPS satellites. It doesn't make sense but that's how the universe works.
Man, the universe is REALLY doing its utmost to make intergalactic conquest either an impractical or depressing endeavour.
It reminded me something...DEATH, it's the same thing you can die but you can't come back to talk about it 😅
I like your statement, but I wanna partially dispute it in good fun.
Unless your consideration of death is like brain death, I’d argue there have been plenty of people that were clinically dead but got resuscitated and lived to tell their tales. Does that not count?
Is the laughing emoji directed to your own self? Because it should.
@@gusmarokity6482Your life is the laughing emoji
Jesus came back from it
@@Anonymous51701 All souls decide what life or destiny they going to have prior to birth. So, your comment is pointless, shows huge amount of ignorance.
I dont understand this logic travelling with light speed doesn't mean someone is spending time somewhere light years ...
Bro you’re slow asf
There are a lot of things that don’t make sense to the normal person like you and I. Physicists use complex equations to figure this stuff out. You can pretty much take their word on anything space/time related.
you gotta listen to the wording "distance shrink from your perspective" but the actual time is still occuring so you would get somewhere and it would feel like it took x amount of time but in reality from the perspective of the non observer you still took the full amount of time to move from point a to point b and then return to point a
if an object travels at the speed of light, its mass will increase exponentially! The speed of light is measured at 300,000 kilometers per second (186,000 miles per second)
If we have the ability to travel at the speed of light then look at this carefully, there are just about 31,500,000 seconds in a year, and if you multiply this by 186,000 (the distance that light travels each second), you get 5.9 trillion miles (9.4 trillion km)-the distance that light travels in one year.
So, it will take you one year and two/three months to reach one light year.. so 1 million years would have passed on earth if we travel to another planet 1 light year away but for us we would age the time it toke us to travel to the planet which if using the example above it would be about 1 year and 2/3 months. ... Atleast that's how I understand it but I could be completely wrong 🤣
@Anthony-cp3sm I don't think it would slow your aging yes you would only be traveling for 1 year but the amount of thermic expansion & thermic decay your exposing your body to by moving that fast you would age the chemical half life of compounds in your body causing a massive buildup of byproducts in your body likely killing you also if your moving that fast the g force alone would prevent your blood from circulating so many factors would cause a human to die if they went that fast
Here to listen only professor Brian Cox
this man spoke for a minute.. 2 million years have passed.
Wow. As someone who’s watched a ton of videos about astrophysics over the years I had no idea particle accelerators were so fast… I thought the speed of light was an abstract concept. Crazy.
Accelerating particles to the sped of light is literally the main purpose of these things. If you let particles collide at this speed you can observe all kinds of exotic matter and learn more about the origin and structure of the universe.
Brian Cox along with Sir David Attenborough are both in my opinion pure legends whom is alive whilst I live on this globe. 🌎 😊❤. They both speak facts without complications. Kudos to both 👏 ❤
Can you just imagine gone for 2 min and it's 40 million yrs later...how do you even comprehend the world you'd meet that has evolved 40 million yrs ahead of you🤯
and they would have already far surpassed what you did many times over. Possibly even found a solution to do it without insane time dilation lol Madness
Evolve? Higher probability that multiple cataclysms have occurred and civilization reset to stone ages.
That world would have long passed. The world you would have arrived would be so strange to you as the world that existed 4 million (not 40) years before you were born.
@@charlespancamo9771 we could never travel at 99.9999999% of the speed of light because we have mass.
Inventing warp drive would solve that issue, because you wouldn't attempt to travel at such speed.
You would grab space as a blanket, pushing what's ahead of you behind you.
That technology is science fiction.
But it is more plausible than the fictional scenario (for educational purposes) of a human attempting to travel at 99.999999% of the speed of light.
Earth itself would probably be destroyed or something
Time dilation. So that's why long distance space travel should ideally be an exploitation of wormholes and not developing speed itself.
The most beautiful part of this video is knowing the action of the highest value is the fellowship of talking about all you had seen. Unity ❤️
All the laws of Physics limit us on this spinning bit of rock, I would love a Star Gate type of travel
Surrogates. With a quantum-linked interface so time doesnt cause problems with controling your surrogate
@@donkalzone6671 WEIRD!!! I've never considered that! That's pretty awesome dude!
We need to find (or create) a traversable worm hole.
its so sad that there will never be a way we can have something like a starwars universe
9999: you should be careful using the word, 'never' !
In principal... wormholes... you never know... maybe in millenia, we can figure it out
Replace "will never be" with "isn’t yet".
@@ianhuckle also the Alcubierre drive might be possible in 100 years or so.
That is so interesting because on such time scales humans will inevitably grow apart and in millions of years we could literally be different species with different intelligence, culture and knowledge.
What is the Aliens visiting us are the humans existed on Earth 4 million years ago? That would be the biggest plot twist.
The likelihood is real that by the time you got anywhere, you'd find someone else had beaten you there by developing faster travel in the millions of years it took you from an outside observer's frame of reference to get there.
The game starfield did this which I thought was cool af, an earth colony ship set off to a new planet but why the time they got there the planet was already inhabited by humans who invented a faster way to travel and had been on the planet for generations already
That's assuming that the humans left behind aren't killed by a major calamity or war. It also ignores the FTL civilization doesn't try to intercept the generational ship and tows them to the planet. Their path would be very predicable since you can't have any deviations or you would miss that target solar system completely.
Society - less jersey shore, more Brian Cox please.
Jersey shore hasn't been relevant in a decade. Get the fuck over yourself.
Nice 10 year old reference there Wonker
@@imnotreal3467having a bad day?
@@benjamin3290thanks.
This was an Einstein theory. However if these protons are moving that quickly on earth. And we can watch them travel at that speed with tremendous changes in time. Then I need more context to why doing that in the fabric of space would be any different.
We cant watch them travel at that speed. From our point of view, they move at the speed of light.
This talk is making me believe in the creator even more👀
Brian Cox, unreal cosmetologist. Watch all his stuff. His incredible
“WTF? I was just gone five minutes!”
Makes perfect sense to me also he's wrong andromeda is 2.537 million light years if you'd travel that close to light speed it'd take you well look at that 2.537 million years to get there idk what he's on. So you'd have to travel faster than light speed to get there in 1 second which with constant acceleration be achievable. 186,282 mi/s. Go 2.36 * 10^22 miles per second and you'll get there in a second is it possible we'll good luck trying to stop unless you can be caught in a tractor beam
@@remix122it takes light that much time from our pov. But in light pov time doesnt work the same. thats why we would become too old on earth but the guy on speed of light wont. 🫠
Gravity affects space time. If we travel at the speed of light we experience time differently than those on earth. We would travel to the andromeda galaxy and it would feel like a few minutes for us but to those still on earth millions of years would have passed. Because they are experiencing space time differently. we perceive time differently on earth because of how gravity affects space time. If you’re traveling speed of light space time doesn’t affect you as much. At least that’s how I understand from all of these physicists talking about it.
@@7tmichael how does time not affect you as much you'd be counting
@@ehuuiisis why do you think star wars ignores this
This dude explained this so well
He has a great way of explaining things so dummies like me understand it all…
Do you understand it? How does the proton feel like it's only going 4 meters? When it's going 27km?
Why would 4 million years pass if it took one minute to get there? Does time move differently for the person moving at the speed of light? Does that mean it didn't actually take one minute to get there (for ppl who saw the craft leave from earth)?
I don't get it.
This is one of the reasons why I love Interstellar. The science and math behind it is actually legit.
Well, mostly and that excludes the ending of course. They did "dumb it down" a lot, since they felt that an accurate depiction would go over the heads of the avarage audience.
Dude seems to come to these talk shows with a plug that seems to vibrate and brings up that pleasant expression!
In our experience, it follows that if we were to travel at the speed of light, we could traverse the entire universe in an instant. Logically, this leads to the idea that the universe exists both outside and within us.
But isn't the distance to nearest star is 4 light years?!
yes 1 minute is large exageration. traveling 4 lightyears takes 5 hours if you go the speed of light
@@lager2043 how is that?!
@@JanniManniMan yes I know , I was just giving an example
Like if it takes light 4 years to travel to it , how can we reach there in hours?!
@@GensetExpert The light takes 4 years in OUR time to travel to or from the nearest star.... but for the light, it's essentially instantaneous.
So in other words if I were to build a spacecraft that traveled at 97-98% the speed of light, and spent about 200 biological years at that constant speed. I could theoretically see the end of the universe. Seeing the stars fade out and flying into a blacken void forever until my body and ship disintegrates via entropy.
Yes. The universe would play out way faster
@@johnreaper4525 ummmmmm would you really wanna be around for the death of the universe? I mean at that point you would just be in a black nothingness.
But you forgot something dude. There is something in universe move faster than the speed of light.
@@thefanpage357 like what lmao
@@PingSharpthe universe itself. Universe expands faster than the speed of light.
Why though? Let’s make this easier. If it takes an hour for you to travel 100km in a car while earlier it used to take people by walk a day and half. And one day you traveled those 100km and came back in 2hr. Even for the ones back where you started from would only have 2hrs of time pass? Why are we confusing the distance travelled and perceived time taken to actual time taken.
Even the collider example that’s called out, though it covered it as 4m, the time it took for it to cover it, let’s say 1min is the exact time that’s passed for the observers outside. It isn’t as if the observers took the entire time of day 70m travelling time to see the result. Am i missing something?
This only happens at relativistic speeds. The kinds of time dilation that we humans could notice would require travelling at a good fraction of the speed of the light. Getting any kind of matter up to that speed is way beyond our capabilities today.
However not for machines. Our atomic clocks are easily sensitive enough to measure time dilation at orbital speeds. GPS literally wouldn't work without it.
It's not percieved, the faster you move through space, the slower you "travel" through time. This is because the total of both "speeds" needs to equal the speed of light. Of course, to be noticable, you'd need to move at a large % of the speed of light.
You can also intepret this effect as the distance of your journey shrinking. It makes no difference which explanation you choose, the effects are the same - you can travel the stars in mere minutes, but to the rest of the Universe, as much time passes as light would take to make the same journey. Time is relative to the observer, thus relativity.
This guy seems like a physicist that’s gone all Hollywood
Listening to this is Hauntingly Beautiful!
it will be a wonderful thing once we get past the starter lessons we currently have, I like to believe there has to be so much more to learn
I have never thought about this fact nice stuff for sure Brian
You know, i like to think in my mind, that Warhammer universe is real, and since humans are losing the war with aliens, they are sending "pods" to different earth like planets, and allow the population to grow. For them the pod travels for a few minutes, but for us its millions of years. SO when the population of the earth-like planet reaches lets say 100 billion, they come back to collect all the MALES from each earthlike planet, to join the inter-galactic war with the aliens, that are multiplying way faster.
We are "alone" only because they are waiting for the population to reach a certain number, and there are thousands of "earths" around, with humans on all of them.
Everything is designed and meant in a way for us to never find out. As he said, you will never be able to tell people what you saw. There is a bigger creator and only he knows.
Spaces is a huge rabbit hole and when you go down, it’s kind of hard to get yourself out specially when you’re stoned
I love brilliant intelligence with so much cuteness
This is one of the reasons as to why wormholes are quite interesting. They're folds in space, rather than a top speed highway. Which means you don't actually go a big distance faster, but rather you take a shorter path at standard speed.
People used to think , talking in long distance was forbidden too :)
As always......
JOHN WICK has all the answers according to the laws of physics😮😊😅😂😅