David, your videos are perfect. No ego, no silly animation. Your approach is factual, concise and perfectly explained. There is no room for anyone to deny the information and knowledge that you demonstrate, unlike other videos where information is often too contracted and summarised. You lay out the science and mathematics like no one else. Utterly brilliant work!
It is not only work but his voice and charisma take 50% of our attention. You can work as much as you can but if you do not have talent, voice and well organized presentation you will be down.
What a great series- no ego, no fuss, every word considered. What an amazing educator- you let the beauty of the subject shine without casting your shadow across it.
It's just crazy how much information and knowledge is being shared on this RUclips channel. I hope that eventually, in the millenia to come, it finds itself on a permanent intergalactic archive of classical 21st century science audio/visual literature.
This an astonishing video, its knowledge density is surpassing any expectations. And yet, Mr. Butler explains it in a serene way, indeed in such a way that the knowledge is just immediately understood and shared. Everyone interested in these topics should watch this some times. This is valuable knowledge for all your life.
This is a scientist in the most strictest sense. Always abiding by the rules. Always honest. In the sense the cleverest can tell you. He stands to be true. You know who values knowledge in truest sense. Respect.
Awesome David Butler! I have been watching and reading about Cosmology for years, and this video is the first and only to explain cosmological distances and the expansion of space clearly and cleanly -- in a way that doesn't raise more questions than give answers. BRAVO! MUST SEE SCIENCE VIDEO!
Superb video. Even for me who know this stuff already, it's very nice to have someone put it in such a simple and efficient language. I'll certainly be using some leads from this when explaining to curious people in the future. Very likely pointing them to this video as well. Very well done. This is my first encounter with your videos, I'm off to watch more of them now!
The soothing narration & background music of this playlist and the "How far away is it" playlist lulls me to sleep most nights. I sometimes wake up to the car horn sound as the doppler effect of redshift is being explained. In all seriousness though, the concepts in these videos is explained clearly & effectively. Rarely is that found in paid presentations, much less YT. Thank you for this Mr. Butler. Assembling the content & the imagery for these video books must have been for you, a labor of love.
He probably has a lot of help from his students who relieve him from the monotonous labor of putting these professional videos together . If not , he's even more brilliant than I presume he is .
@@PAULLONDEN He's a retired software developer with a formal education in quantum physics from what I understand. Guy doesn't even teach classes. He just does these because he likes the subject. All the more impressive to me.
Heyyyyyyyy, it's the universe! I've been there! These video books are so great; combined with the soothing voice they're the perfect thing to listen to when you don't feel well, taking you outside of yourself into sublime cosmic realms that put everything in perspective and let you forget whatever is bothering you.
This series is excellent for bringing the universe in perspective for someone like myself, your explanations and graphs bring the cosmos down to earth. Thank you for your intelligent, detailed videos.
Think of universe expansion like raisin bread dough rising. As the dough rises, the raisins (galaxies) move further from each other. They are not moving through the dough. The entire dough is growing, and the raisins spread out along with it. If 2 raisins are stuck together, like gravitationally bound galaxies, they will remain together during expansion.
Really lovely videos, Mr. Butler. Good job to all involved. I'm going to look through your catalogue, but I suspect that you do not deal with the underlying rationale for assuming the Doppler effect is the correct explanation for the red shift of distant galaxies elsewhere. Richard Feynman posited "Tired Light" as an explanation and that would seem to bring considerations of an ether back into a conversation that has long ago simply discarded it. I wonder if you might make a video dealing with the paucity of physical experiment and increasing dependence on the mathematical implications of possible but unproven theories. Thank you again for these delightful videos.
Hello Sir. David hope you are doing fine as well as your dear ones. Would love to have your teach concerning the newly discovered 6 Massive galaxies discovered by JWST this year 2023, which are behind the 13.8 Bly of the Big Bang. Your teach are the most valuable.
Excellent just doesn't cover how wonderfully comprehensible your videos are. A true pleasure and learning experience. Thank-you. . . And even that seems to small of an appreciation for your efforts.
(20:31) Friedmann derived his equations from the field equations of Einstein's general relativity (24:15). It is possible to do that from Newton's laws too. That is a marvelous but simplified way to teach students these principles of cosmology without any difficult mathematical tools. Once again, a magnificent lecture om physics, mr. Butler. Thank you for all these wonderful episodes!
Subbed. This video should be shown in the schools. I've found many answers of questions which had confused me a lot in the past. many thanks to you. can you make a video on photon and its properties??
I've only recently come across his videos. He has a great voice, too, which makes it all the more easy listening. I can listen to him for hours on end. And I'm not that smart so I can listen to them over and over and keep learning something new.
Fascinating ! Even though I understand a tiny part of it ... Amazing how some people , especially those a few hundred years ago (Newton) understand algebra. They sure must've had special brains .
You are honest, the Arab Muslim scholar Jabir Ibn Hayyan was the first to invent algebra, so the science of algebra is called by his name \"Jabra\". He died in the year 779, may Allah have mercy on Jaber Ibn Hayyan. Thanks be to Allah, Allah is the One who gives us knowledge gradually, Jaber is a scholar in the Qur’an. He wants to make the verses of inheritance in the Qur’an easy to calculate for Muslims. This led to the invention of algebra, thanks be to Allâh. Thank you
Dear David Butler first of all thank you very much for your good explanation, However, I have got a question could you please explain how you calculated Rh = 14*10^9 ly as I am not getting the same result even I have check on google. my result is 1.3952709*10^10 ly. Please explain in details and it will be appreciated. Thanks a lot.
Mr. Butler, first I want to thank you for the wonderful book video. I watched other cosmology video and happen to ran into yours and was hooked. I have a question that I was not able to resovled myself and hope you can help me out. In the video, "How Old Is It - 02" @4:43, you explain that the two galaxies is getting further apart due to expanding space between the two galaxies as accepted base on current theory. Therefore at some time in the past, these two galaxies is closer together as you stated. If that is the case, would the two galaxies be close enough at some point in the past for gravity to hold the two galaxies together and even collided with each other (similar to the Andromeda and the Milky Way right now)? If true, then why are the two galaxies is so far apart today? If not true, then in 13.7billion years in the future, the Andromeda and Milky Way should be further away rather then colliding with each other. I have this question for awhile after watching and reading about expanding universe but not able to find an answer. But I saw that you reply to comments, therefore I want to hear your thoughts. Many Thanks. Mark
Mark, When you take a look at the first period of expansion (called inflation), you'll see that it was extremely faster than it is today. At that time, everything was in the form of elementary particles in almost homogeneous distribution throughout space. There were no galaxies. The caustic process brought about the clumping we see today as galaxies. Have you seen part 03 yet?
I really don't understand why David Butler's videos always have that many comments from religious or somewhat weird people. Yeah the choice of background music might be a bit unusual, but other than that these are great videos with a lot of scientific background.
This is correct and the actual equation is v=sqrt(8)sqrt(c^2-MG/r) , Barrera/Thelin IOSR 2014,2015 the galaxy equation. it can be derived from the Schwartzchild's solution. and Friedmanns eq.
It's weird to think about but if you were looking at another galaxy not only did it take a bunch of light years for the light to reach your eye, the moment you see it, it's no longer there. The farther away a galaxy is from us the more warped in time it'll be by the time the light reaches us.
I think I finally get the Cosmic expansion model as a concept and the hypothesized heat death. Basically we're moving from a single mass spreading out it all out until everything is uniform, no matter after the black holes and black dwarfs have evaporated or energy just nothing. Maximum entropy. I knew Black holes evaporated with Hawking radiation so I'd imagine the same is true for Black dwarfs too or a similar process. So I wonder what temperature is the even temperature of the universe. I guess this also operates on the assumption that our universe is a closed system.
I wonder if dark matter is a result of constructive interference from dark energy. I think that dark energy and expansion comes from black holes. We see galaxies expanding apart from one another and so theorize dark energy but we also have learned that galaxies have super massive black holes at their center. So what if they are responsible for expansion because they are what galaxies have in common. The effect would be the same.
I wonder what it would be like on a galaxy 14 billion light years away, if there were lif, how different would it be, or would it be just as different on praxima centauri? I think there is life out there, but the distances are so great we will probably never get to meet them.
Man, if Edwin Hubble wanted to be remembered after his death, he freaking nailed that objective. ‘Hubble Constant’, ‘Hubble Flow’, and of course the telescope bearing his moniker.
I have a question: if we know exactly when the Universe started (13.8 billion years ago), how come also the universe can be infinite in space? I mean, if the universe is in fact infinite, it goes on forever, but it’s limited by light speed and time (13.8 billion years), how come many astrophysicists think it can be infinite? I mean, even if you take dark energy into account, the acceleration produced by it cannot be infinite. Or can be? It’s not counter intuitive? Thank you sir! Greetings from Argentina.
It's been said that the universe looks the same in all directions. That can only mean it is infinite, doesn't it? And that number 13.8, there is some paradox connected to it. Because different parts of the universe age at different rates. Think of the twin paradox for example, when one of the twins ages differently. What happens when twins calculate this 13.8 at their birth? It's 13.8 + 0. Then 20 years later the twin brother returns from a trip 2 years younger than his brother. What's the age of the universe then? For first brother it is 18.3 + 20, and for his twin brother it is 13.8 + 18. So what is the correct age?
If universe is expanding how do we see galaxies colliding? What caused galaxies to change direction of expansion which should be straight line? Is it caused by gravitational poll of some matter near the galaxy in question. What caused (future collusion) Andromeda Galaxy and Milky Way? Was the change of expansion direction for colliding galaxies caused earlier in time when universe was denser and galaxies closer to each other?
The velocity of the Andromeda Galaxy towards our Milky Way is about 3x greater than the recessional velocity of space at the distance it’s currently at. That’s why it’s BLUE shifted. It’s gravity that wins out and keeps the galaxies in our Local Group together overcoming the expansion rate of the Universe. Most galaxies are in clusters and their mutual gravity keeps them bound to each other causing occasional collisions.
Please clarify this. The Hubble Constant can provide a rough estimate of the age of the Earth, assuming constant velocity. That estimate would 14by. But if the HC is assumed to be constant, then the same rough age estimate would be calculated, no matter what age. So the HC is not constant. If the expansion is the same velocity for time past and time future, then the HC must change over time, even as the actual velocity might be assumed to be constant. Does the slope for the Hubble Constant change over time?
Gravity follows the inverse square rule. And matter is diluted by a power of R^3. Does that mean the effect of gravity is reduced by both the dilution of matter in a volume, and the effect the inverse square rule with the expanded distances?
Well, it is an improvement. You are saying IC1101 but the picture still says IC1011. But you can't have everything. Love to kid such a brilliant man. C.
At 29:09, you measure redshift. How did you determine / measure lambda-e exactly? The only observation that can be made from the experiment would be lambda-o.
When you suggest that redshift gives us the ability to calculate the velocity at which galaxies are moving away from ours, couldn't we use redshift to determine our location in the universe and the point from where it all originated?
According to our current most widely held theory, every thing (except stuff that's close enough to each other to be gravitationally bound) every galaxy is moving away from every galaxy. That makes it impossible to calculate a starting location.
@@howfarawayisit Bullshit, past and recent data does not support that "every thing every galaxy is moving away from every galaxy". This is now flat earth science, mathematical masturbation nonsense. Absolutely everything that scientists have used to support the "Big Bang" "expanding universe" virtually EVERYTHING has been debunked including redshit. Hubble himself warned of his concern "It seems likely that redshift may not be due to an expanding Universe, and much of the speculations on the structure of the universe may require re-examination." David you have spent your life pursuing science and cosmology now when you should be at the wisest point in your life you are refusing to accept the deep flaws in the big bang theory, you ignore many of the worlds most gifted Scientists that refute the big bang, and you ignore the research and data of Professor Herouni that totally and completely dispel the big bang, Professor Herouni's Antenna proved there was no big bang by accurately measuring the Mircrowave Background. You have two choices, fade into oblivion as a flat earther, pushing science that has no future or move with the shifting paradigm and get yourself up to date, learn and accept that science shifts. There was no big bang, there is no dark matter, neither make any sense and are a fantasy joke. Plasma Cosmology and the Electric Universe is where cosmology is heading.
@@sanctusexitium9956 I don't usually reply to emotional rants with words like 'bullshit', 'masturbation' and the like. But in this case, I thought it might be useful for my subscribing audience to see how people like Sanctus Exitium can be understood. The 'How Far Away Is It' channel is dedicated to explaining the currently held scientific positions on physics and astronomy. By that I mean the positions that are taught to physics and astronomy students in all our great universities around the world. Along the way, I present the empirical evidence and mathematical analysis that has brought us to our current understanding. There is no shortage of other theories out there, and current models are always being challenged. This is as it ought to be. It is how we progress. But changing or even abandoning a current position for a new paradigm will be done by serious people arguing their points without the kind of vitriol used by people like Sanctus Exitium. When you see his kind of rant, know that you can be quite justified to simply ignore it, just like you do 'flat earthers'. And thank you for watching.
@@howfarawayisit Well thank you for addressing my “emotional… and vitriolic rant”, I grew up in Detroit and I learned a long time ago to call out a conman when he was full of shit. When I used the term “Mathematical Masturbation”, I was cutting to the chase and paraphrasing the Mathematician, Logician and Philosopher Bertrand Russell who stated: “Mathematics is the science in which you never know what you are talking about, nor if what you’re saying is true. It deals with hypothetical entities and it’s only concern is a relationship to each other being indifferent to whether anything in the real world corresponds.” Further Hannes Alfven states: “Mathematics is suitable to give prestige to any idea but if the idea is myth, mathematics can turn it into a mathematical myth but not guarantee that it has anything to do with reality.” ‘How Far Away Is It’, despite conveying, currently held scientific… dogma, is cultish and nothing more than rubbish. You’ve basically conceded that pushing rubbish that is in a textbook is perfectly acceptable. The NSF is a corrupt Governmental Organization that doles out money and picks and chooses the “Science” just like the corrupt New Media does news with no regard to facts. Very Goebbels’esk if I may say so. On the contrary… you do not present “empirical evidence” in the least. All you present is debunked dogma. As mentioned previously, every, EVERY bit of empirical evidence, including applied laws, data and math used to support “the big bang” has been proven to be incorrect. You cannot build a castle on a foundation of sand no matter how hard you try. If errors are made early on in the theory, such as using “Redshift” to determine rate of expansion, then it follows that everything thereafter is horseshit, and renders it nothing more than mathematical masturbation. You do understand that basic concept? Possessing intelligence does not imply wisdom. Just because it’s in a textbook doesn’t make it fact. If you had any balls or sense, you would pay attention to what Hubble, Arp and Alfven all said: ‘it’s rubbish’, of course I am paraphrasing. David, seriously… everything in the universe came from a singularity? That is pure insanity. Here is something real: Our universe is a trillionth to the trillionth x that years old + a day, moreover, what we see currently is our universe cluster, one of (again) trillions to the trillionth of universe clusters, and here’s the icing: no matter where you are in any of these trillions of universe clusters, no matter how far away it is to where we are now… you are exactly in the center of the universe. Good day David, and BTW I couldn’t watch more than a few minutes of your nonsense.
@@sanctusexitium9956 So have you been able to back up your claims with experiments, peer reviewed articles etc etc etc ? Maybe you should try, if your claims are correct, it sounds to me like you could turn cosmology onm it's head. Your name would be known all over the world, a Nobel prize would be your's for the taking. One small point though, you don't seem to have presented any evidence for your claims or any pointers towards your current hypothesis. I await your video in response to this one. May I suggest Butler's Bullshit Big Bang Blown Away, we need to see something concrete from you. I shouldn't paraphrase really but as Ludwig Wittgenstein once so eloquently put it, "Whereof one cannot speak, thereon one should shut the fuck up".
your presentations are exceptional. a few observations/questions: 1 - you mention early on that the assumption is that the velocity that galaxies move away from each other is constant, but it truly can't be because of gravity (must be decelerating as you state at about 20:00), so i'm curious how that affects the material presented in earlier your video. 2 - how can anything move faster than the speed of light? at 12:45, i think your explanation is that special relativity kinda gets "squashed" since it assumes reference frames aren't changing size, but i'm not sure. 3 - if all galaxies are moving away from each other, why do some collide with each other? 4 - relativistic considerations must certainly come into play for distant galaxies (time being different, lengths being shorter/longer, etc) and therefore affect our observations. 5 - at 10:35, i think you dropped a "/2" from the last term in the 2nd equation from the top on the right (Vxt/2)
Tom, good questions. 1) I cover all the possibilities. 2) The speed of light restricts the movement of light through space. It does not impose any limits on the creation of new space. 3) The expansion of space does not come between objects and the ties that bind them. For example, the force that keeps galaxies colliding is the same as the force that causes your pencil to drop when you let go. Think of a fish in the sea that is warming up. The space between water molecules is getting larger, but the fish is the same size. 4) ? 5) Thanks.
@@howfarawayisit thanks for your reply. I heard somewhere along the way that, like me, you're also a recovering software engineer. I know just enough in the astronomy department to be dangerous. :-) Now, I just tutor.
A thought experiment: If you took a balloon the size of a beachball and immediately placed it into a large vacuum chamber before the balloon burst would the air inside expand at a constant rate or would it expand at an accelerating rate?
All videos are vary informative.....but sir if you can translate it in hindi then it will better for us to understand more easily....and also can share to the people who doesn't know English
If I could somehow measure the curvature of the Universe (if it is curved)...and then take off in a space ship that curves in the opposite "direction" ... would I be able to leave the Universe?
R= Distance , but we should not forget that the distance means looking back in time as well. In that case the closer to us the lower redshift => The universe expansion is decreasing... Or :O ?
Ok, math is fun, but we really have to hollow out the Earth, to make sure about that "0 Newtons of force in a shell" thing. Plus, it looks fun. Like a cosmic bouncehouse.
It is powerful that Friedmann defined the Hubble Constant (V/R) before Hubble empirically plotted the relationship. I don't think Hubble was familiar with Friedmann, so that Hubble knew the theoretical basis for his observations.
@@nightmareaccomplice5816 Gravity works regardless of distance. Only the pull is decreased by a certain proportion. From Wikipedia - 'Newton's law of universal gravitation is usually stated as that every particle attracts every other particle in the universe with a force that is directly proportional to the product of their masses and inversely proportional to the square of the distance between their centers.'
11)No one can falsify the numbers, *The repetition of the word earth in the Qur’an = 463 times = the speed of the earth’s rotation around its axis = 463m/s😄 Why they attack the religion of Islam? Because it is the only true religion impossibility man do this but Allah who do This proves that the Qur’an is true, not distorted, God is true, Muhammad is true, [ I bear witness that there is no God but Allah and I bear witness that Muhammad is His servant and His Messenger ،] Eissa Messenger like Mohamed , I love all prophets Thanks,
For all people : What you do not know about the Qur'an: * What did Allah command us about how to treat a peaceful non-believer: *Allah commands a believer to give money to a poor non-believer (zakat) *the word (بر ) = (You deal kindly = And dutiful to his parents) This sentence is mentioned twice in the Qur'an: 1) Parents 19:14 = 2) The unbeliever (unbeliever) Al-Muslim 60:8 *Quran : 60:8 Allah does not forbid you from those who do not fight you because of religion and do not expel you from your homes - from being righteous toward them and acting justly toward them. Indeed, Allah loves those who act justly." (QS. Al-Mumtahana: Verse 8) * 60:9 Allah Subhanahu Wa Ta'ala said: "Allah only forbids you from those who fight you because of religion and expel you from your homes and aid in your expulsion - [forbids] that you make allies of them. And whoever makes allies of them, then it is those who are the wrongdoers." (QS. Al-Mumtahana: Verse 9) * bad people (changes the truth into falsehood) are liars. Do not believe their words about the Qur’an. Thanks for Allah ,
After watching this video I'm somehow 100% that faster than light travel is possible... I don't know how, but if it possible for space to expand, it should be possible to contract it in front of a space ship. Thus not actually moving at the speed of light from the point of the space ship, thus from the point of the ship it would be moving at sub light speed towards an object... Since space expands without expanding the matter within it, contracting should also be possible somehow, but that would be a problem since there's probably a lot of stuff between a ship and a star... someone really smart figure this out in my lifetime so I can see the stars :)
Maybe we can use some kind of detector to detect all objects that could damage the ship, and create a route through the obstacles other ships can use to traverse it completely automatically and faster... Even managing to contract space with fusion energy powered space contractor (that would make us a type 1 on the Kardashev scale right?). Somehow dark matter calculates into making this possible. Like dark matter is what expands the universe, think about it... There's dark matter all around the universe, and galaxies have a lot more of it than empty space, maybe the expansions of the actual galaxies is still being contradicted by the gravitational force... So if we figure out how to reverse or temporary remove the dark matter with dark energy somehow we could contract space to the point of just after the big bang, so literally nothing... Omg maybe dark energy is what expanding space is, space but shifted somehow, since nothing cannot be created without some kind of energy (dark energy maybe?), so dark matter is the matter that's shifted when expansion is happening...
Fusion is key I think, and somehow creating a new way to transfer energy from a source to kinetic or electrical power, because water turbines are not good i think! Also detecting dark matter. It should be everywhere in extremely tiny quantities, but since space is expanding everywhere it should be happening everywhere. Maybe a space borne detector outside the earths matter rich surrounding. Oh and let's not forget gravity... Really understanding how gravity propagates is key in space contraction.
@@DarkKitarist dark matter is not what expands the universe. you're thinking of dark energy. and IIRC, warp drive would require an infinite amount of energy.
@DarkKitarist the key is "faking gravity" for your style of super luminal travel, often referred to as "space folding" in science fiction. You somehow cause spacetime to contract in front of you and in the direction of your destination, move forward a bit at a perfectly reasonable non-relativistic velocity, and restore spacetime behind you. Unfortunately we haven't even been able to verifiably produce quantum scale black holes at the Large Hadron Collider yet (nobody panic, they'll only exist for a mere femtoseconds if we ever manage to do it) so it could be quite a while before we could, say, collapse the distance from here to Alpha Centauri (around 4.3 light years from here). If you're interested in real research being done on this subject, hit up your favourite search engine up for "halo drive", "quasar drive", or "Alcubierre drive" for theoretical propulsion systems from Dr. David Kipping, Isaac Arthur, and Dr. Miguel Alcubierre respectively.
The universe's size, or age, is based on the speed of light, and some physicists are of the opinion that the speed of light hasn't been consistent over the age of the universe.
Andy Albrecht Joao Magueijo, and Prof. John Webb using high resolution spectroscopy of quasars. research.unsw.edu.au/people/professor-john-kelvin-webb ruclips.net/video/Ha8l_YLCbG8/видео.html
Interesting research. I'll include it in my list of things to watch as time goes on. No doubt, some things will change the current Benchmark Model. This could be one of them.
Interesting research. I'll include it in my list of things to watch as time goes on. No doubt, some things will change the current Benchmark Model. This could be one of them.
![Felix "Unfair" | [Stray Kids : SKZ-PLAYER]](http://i.ytimg.com/vi/Oswujxm2Ag0/mqdefault.jpg)
David, your videos are perfect. No ego, no silly animation. Your approach is factual, concise and perfectly explained. There is no room for anyone to deny the information and knowledge that you demonstrate, unlike other videos where information is often too contracted and summarised. You lay out the science and mathematics like no one else. Utterly brilliant work!
It is not only work but his voice and charisma take 50% of our attention. You can work as much as you can but if you do not have talent, voice and well organized presentation you will be down.
A nice cup of coffee, and a new David Butler video.
Life is sweet.
or an orange!
What a great series- no ego, no fuss, every word considered. What an amazing educator- you let the beauty of the subject shine without casting your shadow across it.
Everyone in the world should watch these videos. Thank you David you are an amazing intelligent human.
I listen to this over and over
Ppoppppp9opopo9ppo9pp99opoo999poo0oppoopooopo999p9pipilitin op9oopppop0pp9opoopoooo9pp9poo9o9oopo9poop9o9opppooopoo0pppop09pp00ooo9opopppp9ppp9oo9poo9pooopoopp9p9oopoooppp0ppoopopooo0o9o09p99pop99oppp0o9ooooo0o9opooop0ooopppoo900opoooopooop0oooppoo9p9poooopoop0oppop9op9opo9ppoo9op09ppoo9Opo 0popular pooppopoooopoopoo9op909oooo90oopo90pppooop9p09ooppp9o99oop9p09oppopoopopoppp09poo0oo9po0op9opp9opoo9oo0p9p9ooppp99opopoppooopopoo90oppp9ooppoopp9op0o0o9po90oo00o9opoo9oopp99009o9o9opp0popoooopoopopoo00o9oooo9p0o9lppoppoppoooopoo0oo9oooopoopppo90ooo9o00o90ppo90ooooo9pp p000ppoo0po0op990999ooooo0ooppop9p0p0oppoooo0p90o9o0o9po9o9po0opo9ppo80o9oo9oo0o9opp0PPP 9o0oooo0ooop9oop9pop op9ppoopoopop pppooop0ppoo0pp9o0p9pooop00p9po9opo99pppooooo00909o9oppoo9o9ooopo9p0oo9p9ooooop9pop0ppo9oopoo9oppoo09p9ooopopop9poppoooo0ppooooooo9opo99pppooo9o99ppop0p9p0o9oopooppoopooopopopopp0popopoppoopooopo9p opop0po0pooo90o9pp09ooooooppp9poop09oooooppoopop0ppooppopopopooop0p0opopop00opp90op0poopoppppo9p9po09o9PPP oo9o0opooop0o9ppopoppo9ooop00pp0o0oo0ooppoopppp9poop9ooppop9o0op9p9opppopoooop00ppoooo0oo00ppp9ppoppoppp999opopooo0open o999p0population popp9o0PPP oppopopopp9pppopoopp9ooopo09popopppooooo9oo9o000o9ooppppp90pop0op opp9pp9pooppopooooo99pppoop9oo0opo9ppp9pp9ppoooopopo9ooo0opp9poo90ooop99p9poop 9poo0pp0p0poppopppoppppo
Yeah something new each time it seems. My favourite you tuber
@@jarwingarimbao2379 poopenis man fart
I have this and a few other downloaded sothat i can listen to this whenever i can, it humbles me
Me too
This is how scientific lecture should be delivered, no stress, no nonsense, enjoyable, and not confusing.
This is officially my favorite RUclips channel
It's just crazy how much information and knowledge is being shared on this RUclips channel. I hope that eventually, in the millenia to come, it finds itself on a permanent intergalactic archive of classical 21st century science audio/visual literature.
After a long search of astronomy channels, I think I found the best one. Keep it up!
This an astonishing video, its knowledge density is surpassing any expectations. And yet, Mr. Butler explains it in a serene way, indeed in such a way that the knowledge is just immediately understood and shared. Everyone interested in these topics should watch this some times. This is valuable knowledge for all your life.
Thank you, Mr. Butler, for providing knowledge in a highly digestible manner, and with music not too distracting. Great.
I’m an astronomy nerd and Your scratching my itch. Thanks
Just found this channel. I dont know if David considers himself a teacher, but he does an amazing job breaking things down.
This is a scientist in the most strictest sense. Always abiding by the rules. Always honest. In the sense the cleverest can tell you. He stands to be true. You know who values knowledge in truest sense. Respect.
Awesome David Butler! I have been watching and reading about Cosmology for years, and this video is the first and only to explain cosmological distances and the expansion of space clearly and cleanly -- in a way that doesn't raise more questions than give answers. BRAVO! MUST SEE SCIENCE VIDEO!
I love your work Mr. Butler. Thank you sincerely for all the work you've done to make this premium quality material available to us.
Superb video. Even for me who know this stuff already, it's very nice to have someone put it in such a simple and efficient language. I'll certainly be using some leads from this when explaining to curious people in the future. Very likely pointing them to this video as well. Very well done.
This is my first encounter with your videos, I'm off to watch more of them now!
The soothing narration & background music of this playlist and the "How far away is it" playlist lulls me to sleep most nights. I sometimes wake up to the car horn sound as the doppler effect of redshift is being explained. In all seriousness though, the concepts in these videos is explained clearly & effectively. Rarely is that found in paid presentations, much less YT. Thank you for this Mr. Butler. Assembling the content & the imagery for these video books must have been for you, a labor of love.
He probably has a lot of help from his students who relieve him from the monotonous labor of putting these professional videos together . If not , he's even more brilliant than I presume he is .
@@PAULLONDEN He's a retired software developer with a formal education in quantum physics from what I understand. Guy doesn't even teach classes. He just does these because he likes the subject. All the more impressive to me.
@@WildlandExplorer Thanks. Don't know why I presumed Butler is a university teacher ; it seemed so obvious.
Honestly the background music makes these videos so beautiful!)
Heyyyyyyyy, it's the universe! I've been there!
These video books are so great; combined with the soothing voice they're the perfect thing to listen to when you don't feel well, taking you outside of yourself into sublime cosmic realms that put everything in perspective and let you forget whatever is bothering you.
I like it man!
This series is excellent for bringing the universe in perspective for someone like myself, your explanations and graphs bring the cosmos down to earth. Thank you for your intelligent, detailed videos.
Videos you make on cosmology and physics are among the best available thank you for making them
Think of universe expansion like raisin bread dough rising. As the dough rises, the raisins (galaxies) move further from each other. They are not moving through the dough. The entire dough is growing, and the raisins spread out along with it.
If 2 raisins are stuck together, like gravitationally bound galaxies, they will remain together during expansion.
Nice analogy. Like a spot on a balloon that is being blown up. But your analogy is better because it's more dimensional.
Thanks Mr. David Butler. Nobody explain the Universe expansion netter than you. You're good tutor.
Really lovely videos, Mr. Butler. Good job to all involved.
I'm going to look through your catalogue, but I suspect that you do not deal with the underlying rationale for assuming the Doppler effect is the correct explanation for the red shift of distant galaxies elsewhere.
Richard Feynman posited "Tired Light" as an explanation and that would seem to bring considerations of an ether back into a conversation that has long ago simply discarded it.
I wonder if you might make a video dealing with the paucity of physical experiment and increasing dependence on the mathematical implications of possible but unproven theories.
Thank you again for these delightful videos.
About every 2 months I rewatch.
Hello Sir. David hope you are doing fine as well as your dear ones. Would love to have your teach concerning the newly discovered 6 Massive galaxies discovered by JWST this year 2023, which are behind the 13.8 Bly of the Big Bang. Your teach are the most valuable.
I learn more in 10 minutes than in years worth if hearing explanations. I finally get it! 👏🙏🏼👍Thank You
Thank you David Butler for this series. Very impressive.
Have you ever considered voice-overs? I could hear you talking about pretty much anything and enjoy it.
Fantastic video. Thanks for sharing it and explaining how useful redshift was in such detail. Easy to understand and extremely interesting.
Excellent just doesn't cover how wonderfully comprehensible your videos are. A true pleasure and learning experience. Thank-you. . . And even that seems to small of an appreciation for your efforts.
I appreciate your output immensely, live long and prosper.
(20:31) Friedmann derived his equations from the field equations of Einstein's general relativity (24:15). It is possible to do that from Newton's laws too. That is a marvelous but simplified way to teach students these principles of cosmology without any difficult mathematical tools. Once again, a magnificent lecture om physics, mr. Butler. Thank you for all these wonderful episodes!
Really amazing videos!! You are my new Carl Sagan!!
Subbed. This video should be shown in the schools. I've found many answers of questions which had confused me a lot in the past. many thanks to you. can you make a video on photon and its properties??
Shishir, Thanks for you note. Take a look at the "How small is it" video book. You'll find photons there. David
Thanks. btw if you can answer, what are you guys working on right now?
@@Itsmeshishir It's just me. I'm working on the 2018 Review. Should be out soon. Then its on to the next chapter of "How old is it".
Wow It's impressive that you are doing all of this work alone. thank you for that.
I think Butler is the top of the game of particle physics descriptors
.
I've only recently come across his videos. He has a great voice, too, which makes it all the more easy listening. I can listen to him for hours on end. And I'm not that smart so I can listen to them over and over and keep learning something new.
this is a masterpiece, thank you so much
oh man i feel overwhelmed by this
Fascinating ! Even though I understand a tiny part of it ...
Amazing how some people , especially those a few hundred years ago (Newton) understand algebra. They sure must've had special brains .
Algebra is not really hard to understand. What is amazing is the person who first figured it out 🤓
You are honest, the Arab Muslim scholar Jabir Ibn Hayyan was the first to invent algebra,
so the science of algebra is called by his name \"Jabra\".
He died in the year 779, may Allah have mercy on Jaber Ibn Hayyan.
Thanks be to Allah, Allah is the One who gives us knowledge gradually,
Jaber is a scholar in the Qur’an. He wants to make the verses of inheritance in the Qur’an easy to calculate for Muslims. This led to the invention of algebra, thanks be to Allâh.
Thank you
@@cosmicislamicmiracles7803when will we get all of those virgins??!!!
You are excellent , David Butler. Thanks.
Thank you so much, this is very informative, amusing, and relaxing at the same time
I love the way you narrate.
Great job, man. Im really appreciate this.
If I could. I'd go back and listen to my teachers. We didn't have Internet either. What a shame.
Your honor, your unbelievably knowledgeable. What kinds of dreams, capture your sublime mind and soul? I wonder.
Wow. Thanks for making these videos.
great video and narration.
This channel is my sleep medicine..
I recon we will find one day the view from the furthest part we can see now, on the other side of that space continues and is simply endless.
First of all, thank you so much for the content! Your series are amazing! If you allow me a little suggestion, IMHO the music would be punctual.
What is IMHO?
Stands for In My Humble Opinion
music is great
@@howfarawayisit Interferometers Make Heroic Observations.
Your videos are amazing. Thank you
Thank you so much David this video is absolutely mind blowing and incredible ❤️
Dear David Butler first of all thank you very much for your good explanation, However, I have got a question could you please explain how you calculated Rh = 14*10^9 ly as I am not getting the same result even I have check on google. my result is 1.3952709*10^10 ly. Please explain in details and it will be appreciated. Thanks a lot.
14*10^9 = 1.4*10^10. It is a rounding up of 1.3952709*10^10. I hope this helps. BTW I love it when viewers check the math. Thanks.
its older than me, thank u for that David
unbelievable demonstration with clear explanation and lovely voice, THANK YOU DR DAVID
Excellent choice in music my good Sir
Wow, I have so many questions, some of which were answered by the video, some not, I must watch it again, thank you.
Mr. Butler, first I want to thank you for the wonderful book video. I watched other cosmology video and happen to ran into yours and was hooked.
I have a question that I was not able to resovled myself and hope you can help me out. In the video, "How Old Is It - 02" @4:43, you explain that the two galaxies is getting further apart due to expanding space between the two galaxies as accepted base on current theory. Therefore at some time in the past, these two galaxies is closer together as you stated. If that is the case, would the two galaxies be close enough at some point in the past for gravity to hold the two galaxies together and even collided with each other (similar to the Andromeda and the Milky Way right now)? If true, then why are the two galaxies is so far apart today? If not true, then in 13.7billion years in the future, the Andromeda and Milky Way should be further away rather then colliding with each other.
I have this question for awhile after watching and reading about expanding universe but not able to find an answer. But I saw that you reply to comments, therefore I want to hear your thoughts. Many Thanks.
Mark
Mark, When you take a look at the first period of expansion (called inflation), you'll see that it was extremely faster than it is today. At that time, everything was in the form of elementary particles in almost homogeneous distribution throughout space. There were no galaxies. The caustic process brought about the clumping we see today as galaxies. Have you seen part 03 yet?
I really don't understand why David Butler's videos always have that many comments from religious or somewhat weird people. Yeah the choice of background music might be a bit unusual, but other than that these are great videos with a lot of scientific background.
The music is fine. I'd like to see some of you make videos like this.
i would think the next series you could do is how hot is it mainly featuring stars
This is correct and the actual equation is v=sqrt(8)sqrt(c^2-MG/r) , Barrera/Thelin IOSR 2014,2015 the galaxy equation. it can be derived from the Schwartzchild's solution. and Friedmanns eq.
It's weird to think about but if you were looking at another galaxy not only did it take a bunch of light years for the light to reach your eye, the moment you see it, it's no longer there. The farther away a galaxy is from us the more warped in time it'll be by the time the light reaches us.
I think I finally get the Cosmic expansion model as a concept and the hypothesized heat death.
Basically we're moving from a single mass spreading out it all out until everything is uniform, no matter after the black holes and black dwarfs have evaporated or energy just nothing.
Maximum entropy.
I knew Black holes evaporated with Hawking radiation so I'd imagine the same is true for Black dwarfs too or a similar process.
So I wonder what temperature is the even temperature of the universe.
I guess this also operates on the assumption that our universe is a closed system.
Very informative presentation. Thank you.
I wonder if dark matter is a result of constructive interference from dark energy. I think that dark energy and expansion comes from black holes. We see galaxies expanding apart from one another and so theorize dark energy but we also have learned that galaxies have super massive black holes at their center. So what if they are responsible for expansion because they are what galaxies have in common. The effect would be the same.
Thank you, David.
I wonder what it would be like on a galaxy 14 billion light years away, if there were lif, how different would it be, or would it be just as different on praxima centauri? I think there is life out there, but the distances are so great we will probably never get to meet them.
Thank you David Butler you make alot of sence
Finally a documentary that isn't stupid
stuff on TV is terrible. This stuff is soooo good.
I can only ‘look on’ in awe at the scientific discoveries and leaps of imagination of our forebears.
Man, if Edwin Hubble wanted to be remembered after his death, he freaking nailed that objective. ‘Hubble Constant’, ‘Hubble Flow’, and of course the telescope bearing his moniker.
I have a question: if we know exactly when the Universe started (13.8 billion years ago), how come also the universe can be infinite in space? I mean, if the universe is in fact infinite, it goes on forever, but it’s limited by light speed and time (13.8 billion years), how come many astrophysicists think it can be infinite? I mean, even if you take dark energy into account, the acceleration produced by it cannot be infinite. Or can be? It’s not counter intuitive? Thank you sir! Greetings from Argentina.
You are correct. The universe is not infinite. I don't know of any astrophysicists that say it is. Can you point me to one.
@@howfarawayisit CHUCK BENNETT: It is somewhat unimaginable, but quite possible that our universe simply goes on forever.
He actually does not say it is definitely infinite. Only maybe. Love your channel!
It's been said that the universe looks the same in all directions. That can only mean it is infinite, doesn't it?
And that number 13.8, there is some paradox connected to it. Because different parts of the universe age at different rates. Think of the twin paradox for example, when one of the twins ages differently. What happens when twins calculate this 13.8 at their birth? It's 13.8 + 0. Then 20 years later the twin brother returns from a trip 2 years younger than his brother. What's the age of the universe then? For first brother it is 18.3 + 20, and for his twin brother it is 13.8 + 18. So what is the correct age?
@@KasiusKlej 13.8 in its own frame of reference.
If universe is expanding how do we see galaxies colliding? What caused galaxies to change direction of expansion which should be straight line? Is it caused by gravitational poll of some matter near the galaxy in question. What caused (future collusion) Andromeda Galaxy and Milky Way? Was the change of expansion direction for colliding galaxies caused earlier in time when universe was denser and galaxies closer to each other?
The velocity of the Andromeda Galaxy towards our Milky Way is about 3x greater than the recessional velocity of space at the distance it’s currently at. That’s why it’s BLUE shifted.
It’s gravity that wins out and keeps the galaxies in our Local Group together overcoming the expansion rate of the Universe.
Most galaxies are in clusters and their mutual gravity keeps them bound to each other causing occasional collisions.
@@executivesteps yup, nearby galaxies are actually very close, in the big picture. gravity > expansion at these short distances
Please clarify this. The Hubble Constant can provide a rough estimate of the age of the Earth, assuming constant velocity. That estimate would 14by. But if the HC is assumed to be constant, then the same rough age estimate would be calculated, no matter what age.
So the HC is not constant. If the expansion is the same velocity for time past and time future, then the HC must change over time, even as the actual velocity might be assumed to be constant.
Does the slope for the Hubble Constant change over time?
So H(t) varies directly with ρ and inversely with R (radius, which means volume)
The Hubble Constant is indeed variable. You'll find as you proceed through the videos that it is more proper to view it as the Hubble Parameter.
Well explained. Outstanding 🙏👏👏👏👏👏👏👏👏
great presentation. dark matter should prompt profound skepticism about gravity and big bang cosmology.
You are the best, Mr Butler. Thanks!
Gravity follows the inverse square rule. And matter is diluted by a power of R^3. Does that mean the effect of gravity is reduced by both the dilution of matter in a volume, and the effect the inverse square rule with the expanded distances?
No, because the effects of gravity can be shown to exert its force as if all the matter was at the center of the gravitating object.
Thank you. For the videos and for your amazingly quick and thoughtful replies.
This video is not listed so other people might have problems finding it
Thanks. I jut made it public.
these are great
Well, it is an improvement. You are saying IC1101 but the picture still says IC1011. But you can't have everything. Love to kid such a brilliant man. C.
At 29:09, you measure redshift. How did you determine / measure lambda-e exactly? The only observation that can be made from the experiment would be lambda-o.
We measure the shift in known hydrogen absorption lines. This is discussed in both How Far Away Is It and How Small Is It.
When you suggest that redshift gives us the ability to calculate the velocity at which galaxies are moving away from ours, couldn't we use redshift to determine our location in the universe and the point from where it all originated?
According to our current most widely held theory, every thing (except stuff that's close enough to each other to be gravitationally bound) every galaxy is moving away from every galaxy. That makes it impossible to calculate a starting location.
@@howfarawayisit Bullshit, past and recent data does not support that "every thing every galaxy is moving away from every galaxy". This is now flat earth science, mathematical masturbation nonsense. Absolutely everything that scientists have used to support the "Big Bang" "expanding universe" virtually EVERYTHING has been debunked including redshit. Hubble himself warned of his concern "It seems likely that redshift may not be due to an expanding Universe, and much of the speculations on the structure of the universe may require re-examination." David you have spent your life pursuing science and cosmology now when you should be at the wisest point in your life you are refusing to accept the deep flaws in the big bang theory, you ignore many of the worlds most gifted Scientists that refute the big bang, and you ignore the research and data of Professor Herouni that totally and completely dispel the big bang, Professor Herouni's Antenna proved there was no big bang by accurately measuring the Mircrowave Background. You have two choices, fade into oblivion as a flat earther, pushing science that has no future or move with the shifting paradigm and get yourself up to date, learn and accept that science shifts. There was no big bang, there is no dark matter, neither make any sense and are a fantasy joke. Plasma Cosmology and the Electric Universe is where cosmology is heading.
@@sanctusexitium9956 I don't usually reply to emotional rants with words like 'bullshit', 'masturbation' and the like. But in this case, I thought it might be useful for my subscribing audience to see how people like Sanctus Exitium can be understood. The 'How Far Away Is It' channel is dedicated to explaining the currently held scientific positions on physics and astronomy. By that I mean the positions that are taught to physics and astronomy students in all our great universities around the world. Along the way, I present the empirical evidence and mathematical analysis that has brought us to our current understanding. There is no shortage of other theories out there, and current models are always being challenged. This is as it ought to be. It is how we progress. But changing or even abandoning a current position for a new paradigm will be done by serious people arguing their points without the kind of vitriol used by people like Sanctus Exitium. When you see his kind of rant, know that you can be quite justified to simply ignore it, just like you do 'flat earthers'. And thank you for watching.
@@howfarawayisit Well thank you for addressing my “emotional… and vitriolic rant”, I grew up in Detroit and I learned a long time ago to call out a conman when he was full of shit. When I used the term “Mathematical Masturbation”, I was cutting to the chase and paraphrasing the Mathematician, Logician and Philosopher Bertrand Russell who stated: “Mathematics is the science in which you never know what you are talking about, nor if what you’re saying is true. It deals with hypothetical entities and it’s only concern is a relationship to each other being indifferent to whether anything in the real world corresponds.” Further Hannes Alfven states: “Mathematics is suitable to give prestige to any idea but if the idea is myth, mathematics can turn it into a mathematical myth but not guarantee that it has anything to do with reality.” ‘How Far Away Is It’, despite conveying, currently held scientific… dogma, is cultish and nothing more than rubbish. You’ve basically conceded that pushing rubbish that is in a textbook is perfectly acceptable. The NSF is a corrupt Governmental Organization that doles out money and picks and chooses the “Science” just like the corrupt New Media does news with no regard to facts. Very Goebbels’esk if I may say so. On the contrary… you do not present “empirical evidence” in the least. All you present is debunked dogma. As mentioned previously, every, EVERY bit of empirical evidence, including applied laws, data and math used to support “the big bang” has been proven to be incorrect. You cannot build a castle on a foundation of sand no matter how hard you try. If errors are made early on in the theory, such as using “Redshift” to determine rate of expansion, then it follows that everything thereafter is horseshit, and renders it nothing more than mathematical masturbation. You do understand that basic concept? Possessing intelligence does not imply wisdom. Just because it’s in a textbook doesn’t make it fact. If you had any balls or sense, you would pay attention to what Hubble, Arp and Alfven all said: ‘it’s rubbish’, of course I am paraphrasing. David, seriously… everything in the universe came from a singularity? That is pure insanity. Here is something real: Our universe is a trillionth to the trillionth x that years old + a day, moreover, what we see currently is our universe cluster, one of (again) trillions to the trillionth of universe clusters, and here’s the icing: no matter where you are in any of these trillions of universe clusters, no matter how far away it is to where we are now… you are exactly in the center of the universe. Good day David, and BTW I couldn’t watch more than a few minutes of your nonsense.
@@sanctusexitium9956 So have you been able to back up your claims with experiments, peer reviewed articles etc etc etc ? Maybe you should try, if your claims are correct, it sounds to me like you could turn cosmology onm it's head. Your name would be known all over the world, a Nobel prize would be your's for the taking. One small point though, you don't seem to have presented any evidence for your claims or any pointers towards your current hypothesis. I await your video in response to this one. May I suggest Butler's Bullshit Big Bang Blown Away, we need to see something concrete from you. I shouldn't paraphrase really but as Ludwig Wittgenstein once so eloquently put it, "Whereof one cannot speak, thereon one should shut the fuck up".
Is space expanding evenly? I mean, like how every yard is expanding; are all of the yards growing by the same amount? And in all directions?
your presentations are exceptional. a few observations/questions:
1 - you mention early on that the assumption is that the velocity that galaxies move away from each other is constant, but it truly can't be because of gravity (must be decelerating as you state at about 20:00), so i'm curious how that affects the material presented in earlier your video.
2 - how can anything move faster than the speed of light? at 12:45, i think your explanation is that special relativity kinda gets "squashed" since it assumes reference frames aren't changing size, but i'm not sure.
3 - if all galaxies are moving away from each other, why do some collide with each other?
4 - relativistic considerations must certainly come into play for distant galaxies (time being different, lengths being shorter/longer, etc)
and therefore affect our observations.
5 - at 10:35, i think you dropped a "/2" from the last term in the 2nd equation from the top on the right (Vxt/2)
Tom, good questions. 1) I cover all the possibilities. 2) The speed of light restricts the movement of light through space. It does not impose any limits on the creation of new space. 3) The expansion of space does not come between objects and the ties that bind them. For example, the force that keeps galaxies colliding is the same as the force that causes your pencil to drop when you let go. Think of a fish in the sea that is warming up. The space between water molecules is getting larger, but the fish is the same size. 4) ? 5) Thanks.
@@howfarawayisit thanks for your reply. I heard somewhere along the way that, like me, you're also a recovering software engineer. I know just enough in the astronomy department to be dangerous. :-) Now, I just tutor.
A thought experiment: If you took a balloon the size of a beachball and immediately placed it into a large vacuum chamber before the balloon burst would the air inside expand at a constant rate or would it expand at an accelerating rate?
All videos are vary informative.....but sir if you can translate it in hindi then it will better for us to understand more easily....and also can share to the people who doesn't know English
The plan is for people to download the text document and auto-translate to their language and use it to follow along with the video on mute.
Dammit, why didn't I have this guy as a math teacher in grammar and middle schools???
If I could somehow measure the curvature of the Universe (if it is curved)...and then take off in a space ship that curves in the opposite "direction" ... would I be able to leave the Universe?
No.
David Butler Doesn't logic even allow the possibly?
Given that the definition of the 'Universe' is all the space there is, you can't logically be outside of it.
Understood...so the best you could hope do is what...bounce off the "walls"? Maybe never even arrive at one?
Multiverses is a fantasy enabled by practitioners with a poor background in philosophy.
Master of the Cosmos, Mr Butler !
R= Distance , but we should not forget that the distance means looking back in time as well. In that case the closer to us the lower redshift => The universe expansion is decreasing... Or :O ?
Ok, math is fun, but we really have to hollow out the Earth, to make sure about that "0 Newtons of force in a shell" thing.
Plus, it looks fun. Like a cosmic bouncehouse.
:o
All forms of light or just visible? X & Gamma rays travel ahead of visible correct?
All light travels at the same speed.
It is powerful that Friedmann defined the Hubble Constant (V/R) before Hubble empirically plotted the relationship. I don't think Hubble was familiar with Friedmann, so that Hubble knew the theoretical basis for his observations.
How do we know the galaxies are clumping up instead of spreading?
Da! There's this thing called gravity.
@@xist4u gravity only works on an object if it is close enough to another object.
@@nightmareaccomplice5816 Gravity works regardless of distance. Only the pull is decreased by a certain proportion. From Wikipedia - 'Newton's law of universal gravitation is usually stated as that every particle attracts every other particle in the universe with a force that is directly proportional to the product of their masses and inversely proportional to the square of the distance between their centers.'
11)No one can falsify the numbers,
*The repetition of the word earth in the Qur’an = 463 times = the speed of the earth’s rotation around its axis = 463m/s😄
Why they attack the religion of Islam?
Because it is the only true religion
impossibility man do this but Allah who do
This proves that the Qur’an is true, not distorted, God is true, Muhammad is true,
[ I bear witness that there is no God but Allah and I bear witness that Muhammad is His servant and His Messenger ،] Eissa Messenger like Mohamed , I love all prophets
Thanks,
@@cosmicislamicmiracles7803 Man created God, not the other way around. The Qur'an is just toilet paper.
good thanks
For all people :
What you do not know about the Qur'an:
* What did Allah command us about how to treat a peaceful non-believer:
*Allah commands a believer to give money to a poor non-believer
(zakat)
*the word (بر ) = (You deal kindly =
And dutiful to his parents)
This sentence is mentioned twice in the Qur'an:
1) Parents 19:14 = 2) The unbeliever (unbeliever) Al-Muslim 60:8
*Quran : 60:8
Allah does not forbid you from those who do not fight you because of religion and do not expel you from your homes - from being righteous toward them and acting justly toward them. Indeed, Allah loves those who act justly."
(QS. Al-Mumtahana: Verse 8)
* 60:9
Allah Subhanahu Wa Ta'ala said:
"Allah only forbids you from those who fight you because of religion and expel you from your homes and aid in your expulsion - [forbids] that you make allies of them. And whoever makes allies of them, then it is those who are the wrongdoers."
(QS. Al-Mumtahana: Verse 9)
* bad people (changes the truth into falsehood) are liars. Do not believe their words about the Qur’an.
Thanks for Allah ,
After watching this video I'm somehow 100% that faster than light travel is possible... I don't know how, but if it possible for space to expand, it should be possible to contract it in front of a space ship. Thus not actually moving at the speed of light from the point of the space ship, thus from the point of the ship it would be moving at sub light speed towards an object... Since space expands without expanding the matter within it, contracting should also be possible somehow, but that would be a problem since there's probably a lot of stuff between a ship and a star... someone really smart figure this out in my lifetime so I can see the stars :)
Maybe we can use some kind of detector to detect all objects that could damage the ship, and create a route through the obstacles other ships can use to traverse it completely automatically and faster... Even managing to contract space with fusion energy powered space contractor (that would make us a type 1 on the Kardashev scale right?). Somehow dark matter calculates into making this possible. Like dark matter is what expands the universe, think about it... There's dark matter all around the universe, and galaxies have a lot more of it than empty space, maybe the expansions of the actual galaxies is still being contradicted by the gravitational force... So if we figure out how to reverse or temporary remove the dark matter with dark energy somehow we could contract space to the point of just after the big bang, so literally nothing... Omg maybe dark energy is what expanding space is, space but shifted somehow, since nothing cannot be created without some kind of energy (dark energy maybe?), so dark matter is the matter that's shifted when expansion is happening...
Fusion is key I think, and somehow creating a new way to transfer energy from a source to kinetic or electrical power, because water turbines are not good i think!
Also detecting dark matter. It should be everywhere in extremely tiny quantities, but since space is expanding everywhere it should be happening everywhere. Maybe a space borne detector outside the earths matter rich surrounding.
Oh and let's not forget gravity... Really understanding how gravity propagates is key in space contraction.
@@DarkKitarist dark matter is not what expands the universe. you're thinking of dark energy. and IIRC, warp drive would require an infinite amount of energy.
@DarkKitarist the key is "faking gravity" for your style of super luminal travel, often referred to as "space folding" in science fiction. You somehow cause spacetime to contract in front of you and in the direction of your destination, move forward a bit at a perfectly reasonable non-relativistic velocity, and restore spacetime behind you. Unfortunately we haven't even been able to verifiably produce quantum scale black holes at the Large Hadron Collider yet (nobody panic, they'll only exist for a mere femtoseconds if we ever manage to do it) so it could be quite a while before we could, say, collapse the distance from here to Alpha Centauri (around 4.3 light years from here).
If you're interested in real research being done on this subject, hit up your favourite search engine up for "halo drive", "quasar drive", or "Alcubierre drive" for theoretical propulsion systems from Dr. David Kipping, Isaac Arthur, and Dr. Miguel Alcubierre respectively.
The universe's size, or age, is based on the speed of light, and some physicists are of the opinion that the speed of light hasn't been consistent over the age of the universe.
That sounds interesting, who are these physicists and what are their publications?
Andy Albrecht Joao Magueijo, and Prof. John Webb using high resolution spectroscopy of quasars.
research.unsw.edu.au/people/professor-john-kelvin-webb
ruclips.net/video/Ha8l_YLCbG8/видео.html
Interesting research. I'll include it in my list of things to watch as time goes on. No doubt, some things will change the current Benchmark Model. This could be one of them.
Interesting research. I'll include it in my list of things to watch as time goes on. No doubt, some things will change the current Benchmark Model. This could be one of them.
Isn't that the McLaren MP4/4 with Senna's helmet?