Quantum Computers for Astronomy, Catching Interstellar Guests, The Book Club | Q&A 198

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  • Опубликовано: 10 янв 2025

Комментарии • 216

  • @steverobbins4872
    @steverobbins4872 2 года назад +24

    Technically, there is an advantage to catching up to an interstellar asteroid, assuming it's already headed where you want to go. The advantage is raw materials. You could use them to build a large habitat with lots of shielding to make the long journey safer and more comfortable than the tiny crowded spaceship that got you there.

    • @illustriouschin
      @illustriouschin 2 года назад +4

      Its the third-cheapest way to travel interstellar and the cheapest if you want to keep your meat body.

    • @TraditionalAnglican
      @TraditionalAnglican 2 года назад

      It’s almost certain that a society that’s doing interstellar travel is going to be using large, spacecraft that can easily carry thousands of people & the means to grow & produce whatever supplies the crew & passengers would need on their journey., and those ships will be well shielded against Ionizing Galactic Cosmic Radiation and impacts of objects they would hit at Relativistic Speeds.

    • @gravelpit5680
      @gravelpit5680 2 года назад +2

      Belters Unite!

    • @illustriouschin
      @illustriouschin 2 года назад

      @@TraditionalAnglican We will never have the luxury to do that.

    • @georgegarcia566
      @georgegarcia566 2 года назад

      That’s what he said 😊

  • @Aetoski
    @Aetoski 2 года назад +1

    Kamino: That interview was absolutely fascinating

  • @durango-CODEBUILDER
    @durango-CODEBUILDER 2 года назад +16

    These videos are so great Fraser! Thank you!!

  • @mishkosimonovski23
    @mishkosimonovski23 2 года назад +2

    I highly appreciate you answering questions without pay requirement.....
    spread the knowledge and vision of future! 🙏

  • @ChrisAldin0
    @ChrisAldin0 2 года назад +2

    I really like the idea of hearing your take on the science of media whether it ends up being books, movies, or games (like mass effect which you've briefly talked about in the past). Good stuff!

  • @onecrowdehour
    @onecrowdehour Год назад

    Fraser your podcast is never boring and always a challenge, I'm officially a fan

  • @Aetoski
    @Aetoski 2 года назад +2

    I've said it before, and I'll say it again... BEST SPACE CONTENT....Period.

  • @petevenuti7355
    @petevenuti7355 2 года назад +2

    Kamino , yes I was so glad to see that episode! I've been asking repeatedly the question about how one might go about doing optical interferometry to create an effectively giant telescope the way radio telescopes do.
    It was also very enlightening , I never thought about how much information is encoded on photons that we don't use.

  • @chrissscottt
    @chrissscottt 2 года назад +5

    Re the Book Club, I'm not a channel member but I'd recommend the author Iain M Banks to anyone interested in clever, humorous and speculative science fiction. His post A.I. singularity stuff is particularly enthralling.

  • @mickeymelnick2230
    @mickeymelnick2230 2 года назад +3

    One of your best Q&A Episodes ever. Thoroughly enjoyed it and learned a lot. Keep up the good work Fraser; there is a large silent majority that may not always comment/like, but your work means a lot to us.

  • @NorthernChev
    @NorthernChev 2 года назад +8

    BTW, if you guys haven't listened to his interview with Lee Feinberg GO DO IT NOW. It's fantastic. They go off the rails geeking out about interferometry and its future. Really good stuff.

    • @extropian314
      @extropian314 2 года назад

      [Sweet name characters!]

    • @dannybell926
      @dannybell926 2 года назад

      Link?

    • @IDoNotLikeHandlesOnYT
      @IDoNotLikeHandlesOnYT 2 года назад

      @@dannybell926 ruclips.net/video/eXchT7mtEao/видео.html (I already had it on my clipboard for other reasons, making this really easy for me)

  • @jacoblojewski8729
    @jacoblojewski8729 2 года назад +2

    Just wanted to add a tiny to "Coruscant": In rare circumstances we CAN see the same object (star, galaxy, *supernova*) at two different times due to gravitational lensing, and we get super excited when that happens. If I recall you talked about it here at one point that we saw the afterglow of a supernova once, and it happened to be in a galaxy that was lensed from our point of view, so astronomers figured out at what time they should look at the other lensed images of it to see it later!
    But yeah, the time differences in lensing isn't on the order of billions of years.

  • @blueredbrick
    @blueredbrick 2 года назад +3

    When I was a kid light speed seemed unthinkably fast. I remember giving a presentation at school age 10 explaining the concept of a light year and how that relates to alpha centauri. Now (43) the same light speed seems glacially slow.

  • @ReidKimball
    @ReidKimball 2 года назад +1

    Props to your video editor for that joke about Snowpiercer. Had me LOL!

  • @ktaylor9095
    @ktaylor9095 2 года назад +4

    Is it possible for some detail beyond the event horizon of a black hole be revealed during the collision of two black holes via gravity waves? For example, is it possible that a gravity wave from the center of mass might escape along a "corridor" of balanced space time between the two black holes, or would the center of mass form a combined event horizon that would hide everything as the black holes combine?

  • @enigmaticloremaster1700
    @enigmaticloremaster1700 2 года назад

    It is good having a proper journalist doing these video's. Helps to keep those conspiracy theories in check. Astronomy is the field of science that will prove or disprove some of our theories of physics. Thanks Fraser.

    • @philosophicaltool5469
      @philosophicaltool5469 2 года назад

      hahahahaha! How about at just two minutes in, this tool is talking about "a black hole can shine brightly" and "quasars are super massive black holes" - if you didn't started wondering what the hell he's talking about, I can't help you any further.
      Spoiler: black holes are not real, neither is dark matter or dark energy. the big bang didn't even happen.
      Sorry?

  • @Confuseddave
    @Confuseddave 2 года назад +5

    Thinking about the light trail question, where you said that light will only reach us from a single instant in the past, I was prompted to think about the way gravitational lensing sometimes allows us to representations of the same star at slightly different points on the sky (e.g. "Einstein Cross" stars). Because the path the light takes is distorted by gravity, there's more than one path the light an take that can reach us (hence we see the same star in more than one place at the same time); is it possible that one of these paths could be significantly longer than another? Or is the geometry of gravitational lensing such that all the paths will be roughly the same length from our perspective?

    • @ChemEDan
      @ChemEDan 2 года назад +2

      Yes, in some cases we've seen one supernova multiple times. We were even able to predict when one would be seen.

    • @jacoblojewski8729
      @jacoblojewski8729 2 года назад +2

      You had the same thought as me, and as @Dan said, yep there was one occasion where we predicted we would see a supernova go off in one image because we saw it in a different one first.

    • @ChemEDan
      @ChemEDan 2 года назад +1

      @@jacoblojewski8729 Cool stuff. I only wish they had telescope time leading up to the event.

  • @CYGNO
    @CYGNO 2 года назад

    Really nice episode. Loving the graphics a very much too. I enjoyed the Hail Mary Project too (the book). It was bleak but somehow beautiful and quite funny.

  • @gravelpit5680
    @gravelpit5680 2 года назад +8

    Almost 200 QA shows. Amazing Fraser. Yall are incredible!!!

    • @rs793976boab
      @rs793976boab 2 года назад

      why dont you do some audiobooks, i would subscribe!

  • @notmadeofpeople4935
    @notmadeofpeople4935 2 года назад +4

    If I see one cricket in my space station I'm opening all the airlocks.

  • @TheGhostGuitars
    @TheGhostGuitars 2 года назад +1

    Coruscant: Astronomy is basically limited by the speed of light (at about 300k/second). A star 200 light years away means you see the star as it was 200 light years ago. The reason why you can't see that star as it was 100 years ago or even how it looks like NOW is because those photons has NOT reached us yet. The 100 year old view will need another 100 years to reach us, so when it reaches us it will be 200 years old*. The light leaving the star NOW won't reach us for 200 years*.
    * Plus or minus the relative speed differences, eg if the star's distance is decreasing steadily, then each new photon will need less time to reach us, but if the relative distance is increasing, the time for each new photon to reach us will increase.

  • @jacobsoley4296
    @jacobsoley4296 2 года назад +1

    Hi Fraser.
    What would the gravational waves from merging black holes look like if you were very close?

  • @MaryAnnNytowl
    @MaryAnnNytowl 2 года назад

    SWEET! Oh, have I got some fascinating books to suggest! I've been reading science fiction/fantasy books for my entire life, and was reading adult-level books at 10 years old, nearly 50 years ago. I've found some amazing books in that time! 😍

  • @carlfollmer1767
    @carlfollmer1767 2 года назад +1

    Really excited about Vera Rubin coming online soon, but it only covers half the sky. If we built a Vera Rubin telescope in the northern hemisphere to pair with the one being constructed in Chile, would we be almost 100% able to spot an incoming asteroid or comet?

  • @klaussfreire
    @klaussfreire 2 года назад +1

    About Coruscant, I know you can see the same object at different times of its evolution with gravitational lensing, the extreme of that being the photon sphere of a black hole. What is the biggest time difference we've observed of images of the same object? Have we seen any particular galaxy evolve meaningfully through that phenomenon?

  • @meesalikeu
    @meesalikeu 2 года назад

    good one this week!

  • @tiagop.6492
    @tiagop.6492 2 года назад

    Project Hail Mary is the book I've read this year!

  • @jeremyeharris
    @jeremyeharris 2 года назад

    Hoth... great question and a great answer :)

  • @rom26ik
    @rom26ik 2 года назад +1

    Okay, question about black holes.
    Let's say I have a ship orbiting just above the event horizon and I drop in a probe thats connected by a wire. Would I be able to get data from beyond the event horizon before detaching the probe so I dont get pulled in. Or would the signal in the wire be unable to pass through the event horizon?

    • @Daltem
      @Daltem 2 года назад

      The event horizon is the threshold distance at which the black holes escape velocity is lightspeed
      And since anything with mass cannot reach, let alone exceed lightspeed, anything that has mass that gets even relatively close will get ripped apart atom by atom
      There's also the fact that for that same reason,
      (nothing with mass has a chance of coming back from the event horizon)
      You would either need your information to be carried back to you by something like a tachyon, or a particle with negative mass, both of which contradict current laws of physics

    • @Daltem
      @Daltem 2 года назад

      To sum that up, even ignoring the fact that both you, your ship, and anything that has mass, would be ripped apart before you could even get close
      You would need a method of collecting data that currently is not allowed by the laws of physics

    • @rom26ik
      @rom26ik 2 года назад

      @@Daltem so whats the reason a normal wire wouldnt work
      This question is assuming some kind of material that can withstand the forces for a short time. I already know if I got anywhere close to the accretion disk I'd get swiss cheesed by it

    • @Daltem
      @Daltem 2 года назад

      @@rom26ik well that's kinda the point, a normal wire uses electrons to carry information, and they have mass.
      so even assuming by some act of God, that the wire is still intact right next to the event horizon, it is fundamentally impossible for the wire to still be intact past the event horizon
      And even if we allow the wire to be intact at this point, the gravity is so strong here, that the electrons would either be crushed into the protons to make neutrons, or straight up just stripped out of the wire
      To sum it all up, the electrons have mass, which in this case is too heavy

  • @Roland14d
    @Roland14d 2 года назад

    22:56 I'm no astrologer but I can see an option where you wouldn't have to match the speed of an Oumuamua type object...but it comes at a cost.
    Use a "net" or "harpoon": This may result in seriously high Gs depending on relative velocity.

  • @stevencoardvenice
    @stevencoardvenice 2 года назад +1

    Question for Fraser: have you seen Common Sense Skeptics' videos thoroughly debunking the logistics and physics of Musk's mars colonization plan, (or lack thereof), as well as debunking the starship itself as a realistic vehicle for mars colonization? SpaceX has never issued any paper or statement rebutting them in the 2 years since the skeptic videos were released. For example, the space required for food storage for the journey already exceeds the ship's payload capacity

  • @garyswift9347
    @garyswift9347 2 года назад +3

    Dagobah - Question: If you could take money from a current project and move it to something else that is either underfunded or not happening at all, do you have any clear winners and losers? (for example, kill the SLS program and explore Uranus in stead). As always, thanks for another great show.

  • @jacobsoley4296
    @jacobsoley4296 2 года назад +1

    Hi Fraser.
    We often hear that when the milky way and Andromeda collide no two stars will actually impact each other. But will stars come close enough to each other that planetary system will be torn apart?

  • @ArianeQube
    @ArianeQube 2 года назад

    @Fraser great video as always, but a few remarks need to be made:
    - D-Wave does not create universal quantum computers, but quantum annealers. These are very specific devices used for solving very specific optimization problems.
    - Universal quantum computers DO exist, in fact you can access the ones from IBM for free (IBM quantum labs). The largest, according to their roadmap, will be announced sometime next month, and will have 433 qubits. The free ones are nevertheless smaller. The problem of current quantum computers is nevertheless noise, a reason why John Preskill from Caltech coined the term NISQ (Noisy Intermediate Stage Quantum) for these devices in 2018. Noisy and small as they may be, people are already running many algorithms on them and quite successfully.
    - You say quantum teleportation is used to teleport "a particle". This is incorrect, quantum teleportation is a process by which the quantum state of a particle, say A for example, and given to particle B, while destroying the initial state for A. If A was initially in a quantum state |psi> and B in a quantum state |phi>, after teleportation, A is in another state, for example |0> and B is in the state |psi>. It's important to note that the state gets teleported, not matter.

  • @zimmy1958
    @zimmy1958 2 года назад

    Love this video, Mustafar

  • @drayquan23
    @drayquan23 2 года назад

    Hey, is the city graphic in this vid's thumbnail from SimCity Buildit ?

  • @jsalsman
    @jsalsman 2 года назад +1

    The fastest/largest/most expensive quantum computer today does classical value classification tasks about as fast as a 1 MIPS VAX from 1985. The only real advantage I knew of before now was for certain (bio)chemistry problems where the data is inherently quantum-valued. I'm thrilled that there are similar astronomy applications.

  • @piotr2037
    @piotr2037 2 года назад

    Hi Fraser, You were talking about scientists who measure brightness of supernovas to determine distance to them. How they know that there is no any cosmic dust on the way that lower the brightness?
    thanks!

  • @johnlshilling1446
    @johnlshilling1446 2 года назад

    Concerning the Event Horizons, when a particle is nudged enough to cross the horizon, I'm thinking that it continues in an orbit just beyond our ability to detect, and then also continues to "bump into" other particles on its timeless journey towards the center "Singularity"...
    Am I wrong? Or does the Event Horizon mark a point where gravity overcomes orbital velocity and "sucks" it into the center? This is confusing to me because I've heard it explained that these particles accelerate to C, where time stops... (?) OR... is it just time from our perspective that stops, or stops for the particle in relation to our perspective. 🤔 This timestop for the particle seems to agree with explanations I've heard on time dilation.., and if true, does the particle EVER fall inward? If time stops, then space must also end... so how can anything fall inward when there are no longer any directions?
    OR - OR - OR... is this what is meant by "physics breaking down" beyond the Event Horizon? 🤔, again... These questions have always twisted "me blain"... 🎶 ...stopping my mind from wandering, where it will go-O-o... 🎶

  • @fabriciofercher8317
    @fabriciofercher8317 2 года назад +1

    According to that city, the supposed future is chaotic likes todays.
    Applying the Scientific Method to social systems is more complex than any technical area of today, and that is a knowledge that ALL MUST have to make it work.

  • @ale1987
    @ale1987 2 года назад

    Looking for an answer to this question for years (with no luck): astronauts reported that stars are not visible from orbit to the naked eye if it’s daytime, they are only visible during earth nighttime as the earth “blocks” sunlight. My question is: what would astronauts see through their spacecrafts windows during interplanetary travel? My logic says that as soon as you leave earth shadow, space would be pitch black. I am wrong? Your channel is awesome, THANKS!

  • @rJaune
    @rJaune 2 года назад

    Was Curiosity's parachute material different than Perseverance's? I do not recall this many strings following Curiosity around. Maybe Perseverance just takes more pictures?

  • @timothycivis8757
    @timothycivis8757 2 года назад

    So no planet name lol . Fun Idea though ! My odd question is if you lost track of what time it is while traveling thru space how would you rediscover what time it was?

  • @DanaNourie
    @DanaNourie 2 года назад

    Did anyone catch what book Fraser said he’s reading next? He said it too fast for me. I think by Stevenson? I checked Universe Today in Good Reads but didn’t see it.

  • @OzoneTheLynx
    @OzoneTheLynx 2 года назад

    Bespin. I think the "comet interceptor" mission of esa will also take an opertunity to intercept an interstellar object. (It will wait at L2 for a long period comet)

  • @jacobsoley4296
    @jacobsoley4296 2 года назад +1

    Hi Fraser.
    If a distant civilization was dismantling their star via starlifting, what would that look like from our telescopes? Would it be easy to recognize?

  • @themaximus144
    @themaximus144 2 года назад +1

    It might be a good idea to make a discord, or maybe even a reddit page, or something else similar, where fans can discuss the books you're reading with one another.
    Obviously it'd probably take some work to moderate and everything. And I imagine you're very busy (running an independent news source sounds like a very busy enterprise), so maybe it wouldn't be feasible, but it's an idea anyways.

  • @vikramkaura6335
    @vikramkaura6335 2 года назад

    sad i was really looking forward to coming to your house :). but thank you great content

  • @bravo_01
    @bravo_01 2 года назад

    Awesome thumbnail !

  • @PsychoticWolfie
    @PsychoticWolfie 2 года назад

    Love the episode Fraser! But, just gotta say, I don't think crickets would provide much companionship in space tbh. They may be easier to care for and less affected by zero g and radiation, but I think the question was asking more, what PET animal would be best suited to come with us to space??
    I'm a big proponent of dogs in space. They're mans best friend, and would want to come with us of course. I don't care about the logistics, if I have to start my own space company and sacrifice some payload capacity for a doghouse/bathroom/vet/workout center I absolutely would! I'd even open a space dog hotel if I could :)
    But I also think cats would be just as suited to space, given all the proper care and maintenance they need. Humans are social creatures, and some spaceflights are going to be long and potentially stressful. Especially if we're talking colonization. We'll want companionship from pets in space. And, if we can also figure out how to make dogs and cats more resistant to radiation, that can probably translate over to humans too! Whether from a new drug or genetic treatments, we need to look into it.

  • @F_L_U_X
    @F_L_U_X 2 года назад +1

    Wouldn't the accretion 💿 be a bright 3D ball and resemble a star if the material came in from all angles?

    • @seditt5146
      @seditt5146 2 года назад +1

      Na, The photon sphere will because they are Bosons and do not self interact however other particles will constantly interchange angular momentum until they all go in the same direction, similar to how the solar system forms a plane despite it starting as a giant clump of gas and dust. This ends up being perpendicular to the rotation of the blackhole as that is dragging it in that direction via some classical and relativistic effects.

    • @F_L_U_X
      @F_L_U_X 2 года назад +1

      @@seditt5146 I had a feeling this was the case. Thank you.

    • @seditt5146
      @seditt5146 2 года назад +1

      @@F_L_U_X No problem. If ya sanna see demos there are videos here on YT you can check out where hundreds of beads are tossed on a dented stretchy fabric with a bowling ball in the middle to simulate gravity and you can throw a cup full of beads on it haphazardly yet quickly all their momentum cancle out or enhance such that all of them rotate the central object in the same direction. Obviously its 2D and not a perfect analog but pretty close and let's you see it in action.
      On top of this there are relativistic effects like frame dragging which drag the fabric of spacetime along with the Blackholes rotation which works together with it all to make sure we have this disk on the equator of the BH. Id go into more detail but while I understand it idk if i can do it justice and don't want to lead you astray if I am mistaken on any point of frame dragging so best to seek other sources for exactly how that works.

    • @F_L_U_X
      @F_L_U_X 2 года назад

      @@seditt5146 9

  • @Raz.C
    @Raz.C 2 года назад

    Book club could meet at my place. I have plenty of room. You'd have to get everyone to agree to come to Australia every time, though...

  • @zephyr9673
    @zephyr9673 2 года назад

    Mustafa do primordial to ultra massive black holes consuming spacetime account for cosmic expansion?

  • @Crushnaut
    @Crushnaut 2 года назад

    Sure you can hitch a ride on a comet/asteroid... if you lithobrake. Kind of like how a bug hitches a ride on your windshield. :D
    More realistically though, you could catch up to a comet, land on it, and use its resources as propellant.

  • @BraveNewWorldAH
    @BraveNewWorldAH 2 года назад +1

    How bold of you to assume I'm not having an existential crisis 😂

  • @MichelleHell
    @MichelleHell 2 года назад

    So Galaxies should be the same color? I wonder what a color corrected picture of the universe would look like. If we correct for redshifts, how uniform does a picture of the universe look? Surely there are variations for different elements and types of physical activity. A monochromatic universe is kind of eerie to me.

  • @generaldvw
    @generaldvw 2 года назад

    Hoth...Asteroid Space ships is the way to go man!

  • @dadsonworldwide3238
    @dadsonworldwide3238 2 года назад

    We have been stuck in the transistor age almost a 100 years now.people may need to accept that it's just like the horse and buggy or worse it's the final reach .
    We have spread ourselves so think financially that we have put thing we can improve on the back burner in hopes of discovering things that may not come.

  • @robertchadwick8853
    @robertchadwick8853 2 года назад

    Bespin
    If money was no object, which next mission /telescope and the choice was yours to make which would it be? Why that choice ? And the benefits of that choice?

  • @Calysto929
    @Calysto929 2 года назад

    ive got a question thats been puzzling me, if we cant go near the speed of light and only light can cos light has no mass so it wont become infinite long and infinite massed - why then does light get pulled in by a black holes gravity if it didnt have a mass to be affected by gravity?

    • @philosophicaltool5469
      @philosophicaltool5469 2 года назад

      that's actually a really good question!
      And sorry to ruin it for you though, black holes are nonsense, that's why things don't make sense to begin with.

  • @neileaston1712
    @neileaston1712 2 года назад

    Hiya, Could gravitational lensing, as seen in the Jwebb deep field, be used to see 1 star in two different time periods? And if so, how valuable would that information be, And what discoveries might be made? I might/likely/am be making many assumption on how things work here :P
    Just to clarify, 2 telescopes placed parsecs apart one observing a star/galaxy on the edge of a gravitation lens and another far enough away to shift the perspective on the same object out of the line of lens (Lens edge to reduce the distance the 2 telescopes need to be apart, assumedly at the cost of a reduced time differential?
    If this is a thing, I bet the positional differential between the two time periods of the object would screw the pooch... :P
    Thanks for feeding our neurons with hope and nerd joy!
    Peace

  • @rogerwilco1777
    @rogerwilco1777 2 года назад

    Wouldn't there be many hypothetical benefits to 'hitching a ride'..?
    Given you have the future-tech (many many quantum 3-D printers?) to mine and use the extra water, metals etc.. maybe make some use of artificial rotational gravity?
    ..make new batteries?, scout drones?, tie fighters?
    Even an unmanned craft could shut down certain equipment once landed right?, thus making the lifespan longer or allowing the power to be directed to some other scientific instrument?
    I'm gonna glue like 5 comets and asteroids together one day and show you the perfect space-ship Fraser!

  • @sulljoh1
    @sulljoh1 2 года назад

    You say black holes also generate fusion. Since black holes are so big/extreme, could their combined fusion output actually be greater than all of the stars in the universe?

  • @BrunoWiebelt
    @BrunoWiebelt 2 года назад

    great show QQ: can you explain Sigma 5 level of a result

  • @Tadiaki
    @Tadiaki 2 года назад

    I dont understand why hitching a ride wouldnt work?
    If you were able to know the position a long time in advance and could intercept its trajectory.
    Say you had an object passing by in 3 years, moving at like 100 km/s
    and you had a spaceship that could go 5 km/s. If it was durable enough to withstand the impact and very small, light and springy so it wouldnt destroy the object it could either hitch a ride if it were able to land on it or at least get a major speed bump?

  • @ocoro174
    @ocoro174 2 года назад

    how would you go about artificial gravity on the hollowed out asteroid though? 🤔

    • @frasercain
      @frasercain  2 года назад +1

      You spin the asteroid.

    • @ocoro174
      @ocoro174 2 года назад

      @@frasercain yeah ok but hope you expand on this next week 🥰 also how it might start out as a mining rock eventually repurposed for space travel 🤔 but the energy to get it spinning and going must be immense

  • @roccov3614
    @roccov3614 2 года назад

    Regarding Hoth: I think it would be a crime against humanity if you send any number of people on a large generation ship if there are no resources to consume. I think the main benefit of a hollowed out asteroid, or even one that was just attached to the ship, is that you could mine it continuously to provide the resources, not only to survive, but also to expand and grow.

  • @nilochervan8291
    @nilochervan8291 2 года назад

    Sneaky with that face in the background at 4:54. Pretty rad

    • @frasercain
      @frasercain  2 года назад

      Hah, Anton sneaks jokes into the episodes sometimes.

  • @doncarlodivargas5497
    @doncarlodivargas5497 2 года назад

    Yes, the black hole are spinning, and stuff fall in, but are matter falling in adding to the rotation or stealing from it? Will the black hole spin faster and faster or slowly end up not rotating? I assume matter falling into a black hole fall straight down so it will steal rotational energy from it? Does it matter for å black hole if it spin or not?

    • @doncarlodivargas5497
      @doncarlodivargas5497 2 года назад

      @@seditt5146 - OK, but the mass in the center, the "black hole" itself?
      In my non-physisists head I kind think the matter falling straight down slowly steal the momentum of what is in the centre and one day it stops?

    • @frasercain
      @frasercain  2 года назад +1

      It depends on what direction the stuff is falling in. It can spin it up or spin it down

    • @philosophicaltool5469
      @philosophicaltool5469 2 года назад

      @@frasercain you really just make stuff up as you go along, don't you?
      As Quasars are also black holes now, and black holes can shine brightly, I shouldn't be surprised, right?

  • @SteamVision
    @SteamVision 2 года назад

    Coruscant: I think something people don't get is to see a light trail, or to see the same object more than once(without Grav lensing) from the earth It would have to be accelerating faster than the speed of light and since momentum is a thing even Andromeda a galaxy on its way to us only shows us its light once. but wait if something is travailing towards you in space making its own light and sending it our way while it approaches will we see things from that light source as if it was moving in fast forward?

  • @MusikCassette
    @MusikCassette 2 года назад

    12:47 "We don't have these existential crisis." Only talk for yourself.

  • @zapfanzapfan
    @zapfanzapfan 2 года назад

    Kamino. That would be a cool telescope.

  • @craigsmalls8169
    @craigsmalls8169 2 года назад

    Okay you send makes no sense to hitch a ride but what about drafting to save fuel?

    • @frasercain
      @frasercain  2 года назад

      There's no atmosphere in space, so you can't draft.

  • @emark8928
    @emark8928 2 года назад +1

    I take it you can tell the current state of quantum computing, or the trajectory of quantum computing, but not both, right? 😄

  • @unvergebeneid
    @unvergebeneid 2 года назад

    Why put those quantum interferometer telescopes both at L2? You might as well put them in L4 and L5 of the Earth-Sun system respectively.

  • @berthulf
    @berthulf 2 года назад

    Bespin. If I had the money, I'd have funded a sample return mission to Oumuamua the second we knew it was there, I just can't believe we haven't tried, given the potential revelations.

  • @realzachfluke1
    @realzachfluke1 2 года назад +4

    I'm definitely happy to take my mind off of our elections in America right now with some always enjoyable Fraser Cain QA'ing, thanks Fraser 🤜🤛
    And my post-video edit: [Yavin], the final one, was absolutely my favorite question AND answer. I genuinely loved Fraser's answer to that cryogenic freezing question because it was such a massive shock to me! I would've guessed the total opposite, but I really enjoyed hearing his actual perspective

    • @oldschoolman1444
      @oldschoolman1444 2 года назад +1

      I'll just be happy to not be bombarded with political adds! Ugh!

    • @realzachfluke1
      @realzachfluke1 2 года назад +1

      @@oldschoolman1444 Right??? My entire family is just _exhausted_ from these last couple months of nonstop political ads. There were even a couple of weeks where literally every single day included one or sometimes two different physical flyers (of utter nonsense) showing up in our mail.
      So you're absolutely right, at least there'll be that sweet silence after this regardless of what happens. Thanks, friend.

  • @scottturnbull6341
    @scottturnbull6341 2 года назад

    yavin, would totally do this

  • @AlexBarregon
    @AlexBarregon 2 года назад

    Tattooing.
    Thanks Fraser for another interesting video. 👍

  • @RVEnglish
    @RVEnglish 2 года назад

    If we accept the idea that exceptional claims require exceptional evidence, will we ever reach a point where we can say definitively that Mars had - or has - life? Short of finding a fossil or the ruins of an alien city, what would be required to say with a degree of certainty one way or the other? Will we always be in "We don't know" mode?

  • @kylea2437
    @kylea2437 2 года назад

    Fraiser been following you for almost 10 years now and love the videos. Question, could we use an asteroid to nudge earth further away from the sun to negate global warming? Obviously not by direct impact like the dart mission but almost like towing the earth away. How far away would be safe? Could we do this with today's technology? Note: Obviously this isn't the ideal solution.

    • @petermcaskill722
      @petermcaskill722 2 года назад

      Thanks so much for reading my question and giving it such a detailed response. You bring science to people in a way they can understand. Thanks again 😊

  • @michaelmcconnell7302
    @michaelmcconnell7302 2 года назад

    Naboo - would love to hear what you think about Children of Time by Adrian Tchaikovsky

  • @janklaas6885
    @janklaas6885 2 года назад

    ©️27:53 😆
    2©️18:03 😆

  • @iancooper8777
    @iancooper8777 2 года назад +1

    🎆Alderaan: whenever I see that timeline chart of the universe, I'm reminded of a Doctor Who episode from the golden age of the BBC. The TARDIS accidently travels back to time zero and becomes stuck, outside is a formless void and the Doctor theorises that the Big Bang hasn't started, reason unknown. But wait they are not alone, there is an alien time-ship also stranded and in distress so our travellers board it to offer assistance. There they discover a problem in the engine room, some unstable fuel has been ejected and the Doctor realises this will trigger the Big Bang but only if the ship can be repaired and sent on its way. Mission accomplished our Universe's timeline is restored and the TARDIS can go back to the future (Ha Ha).

  • @richardmurphy3548
    @richardmurphy3548 2 года назад

    Question: Could Dark Energy be gravity of other universes surounding our universe? Sort of implying that the big bang is a repeating function, obviously no evidence but just a thought.
    Thanks for you very informative channel.
    Rick located near Ottawa. 😁

  • @thetez96
    @thetez96 2 года назад

    Alderaan have kind of a side question... Is there any theoretical way to ever measure or "see" (not in light, UV, etc) beyond the cosmic background radiation?

  • @neoforce0
    @neoforce0 2 года назад

    quantum computers. I've heard people talk about this from few years ago. basically, its in a state compared to a 1960 computer was and that ideas and experience will go in leaps and bounds. It'll be more like analog pc in my opinion.
    I do have one question I can't seem to figure out. Are there ways to measure gravity strength from the universe away from Earth? Then measure planets, moon and sun perhaps to test and calibrate gravity strengths. And then pick up gravity spots in dark sky

    • @Daltem
      @Daltem 2 года назад

      Unless we discover gravitons, or the object is giving off gravitational waves of noticeable strength, I'm not aware of any possible methods to measure gravity directly
      Now, measuring gravity indirectly?
      Well that's basically just calculating it's mass

  • @creightonfreeman8059
    @creightonfreeman8059 4 месяца назад

    It's not so unrealistic that a life form can put out photons. Fireflies (aka "lightning bugs") do it, and so do bio-luminescent protozoans in plankton and some deep ocean life forms.

  • @Zaped75
    @Zaped75 2 года назад

    The time we see in the past is set by how far you're looking. Light take time to travel, Space is getting bigger. It stretches the light in to the red shift. like a line gets bigger on a balloon and stretch as you blow it up. How much stretch tell us more. if it moving away from us or not. moving away more red shifted. Some stars blow up at the power every time. The light from it known, it tell them how far there looking. Then you know in time it happen. Take more than one look and know, Have to study it. Wait for the info you need. Then look at others like it, tell us how it changes over time.

  • @illustriouschin
    @illustriouschin 2 года назад

    I want to hear lots more about quantum telescopes.

  • @HebaruSan
    @HebaruSan 2 года назад

    Hollowing out an asteroid will be somewhat challenging if it's a loose collection of dust and rubble

    • @filonin2
      @filonin2 2 года назад

      They are likely glued together with ices, or could be. Or just don't pick that kind of asteroid.

    • @seditt5146
      @seditt5146 2 года назад

      Naaa, they are likely packed far more dense than even a mountain on Earth or at least close to equal and look at that. Its not sand, the smallest feature we seen on the reason redirect was something like 10 meters across or something like that if I recall correctly so when they say dust and rubble its more like rocks and boulders. Regardless... The gravity is so week I could probably pick up one of those 10 meter boulders. Not much in the way of structural support needed to keep that going.

    • @philosophicaltool5469
      @philosophicaltool5469 2 года назад

      asteroids and comets are rocky bodies, not dust and ice

    • @philosophicaltool5469
      @philosophicaltool5469 2 года назад

      @@seditt5146 the gravity is so weak, that they are likely packed far more dense than even a mountain on earth?
      riiiiiight....

  • @acmelka
    @acmelka 11 месяцев назад

    Best animal space companion, grizzly bears

  • @ajdaniels
    @ajdaniels 2 года назад

    Hey Fraser, can you do your 200th episode like "200" in Stargate, please?

  • @ELXABER
    @ELXABER 2 года назад

    What happens if you accelerate the rotation and gravity of a star by 1 million? Light does not escape, due to gravity, the accretion fuses matter and turns it into fuel, before gravity traps the light.
    Or, in current theory, a Unicorn appears, math and physics break down, and energy and matter are destroyed?

  • @pure46
    @pure46 2 года назад

    Yavin. Wake me up after first contact!!

  • @shockslice7632
    @shockslice7632 2 года назад

    Well... you could hitch a ride but it would be your destruction - If you park your car on a highway with a lorry coming at 100mph, or better yet a train track, you would be accelerated to pretty much 100mph, it's just surviving that impact. What if you could lasso the comet with a giant elastic band?

  • @carlospenalver8721
    @carlospenalver8721 2 года назад

    Ever consider the Antikythera mechanism discovered in Greece was used by our possibly human ancestors from another galaxy or parallel universe as an aid to guide them here and many of ancient astronomical monolithic structures are in remembering that event. Just thinking about how if the planet went through a cataclysm where we either had to leave or not so many survived we would be telling a tale of us here in the same manner if everything just went black on earth. Maybe not even in the near future but millenia from now if it were today after oral traditions is all we possess as in the past after everything else gets retaken by this earth and building decay and crumble to the ground . Remember now.

  • @Sp3rw3r
    @Sp3rw3r 2 года назад

    Can we see object at different ages? In general no. There are a few edge cases. Gravitational lensing can make it so the light from far away galaxies takes different paths. The age difference is only a couple of weeks. Then there is light that can be reflected from a gascloud. We might see the faint glow of a neutronstar and the light of the supernova that created it reflecting from a gascloud that is even further away. I'm not sure on what age those reflections would have, compared to the age of the light of such a neutron star. Perhaps some hundred years at most?

    • @philosophicaltool5469
      @philosophicaltool5469 2 года назад

      no such thing as a neutron star. just think about it, it makes no sense. it's just one of many fabrications aka fairy tales they tell you, but which you do not have to blindly gobble up or parrot even ;-)

  • @pasozytspoleczny
    @pasozytspoleczny 2 года назад

    Mustafar is my vote

  • @DonRushtheClassics
    @DonRushtheClassics 2 года назад +1

    You can only be thawed once.....How many years in the future would you like to skip? 10, 100, 1000 or one million? (guaranteed to be alive ) I'd chose a thousand ...but I think a million years into the future would be awesome.

    • @filonin2
      @filonin2 2 года назад

      There would be no humans to interact with. You would be a zoo animal.

    • @gravelpit5680
      @gravelpit5680 2 года назад

      Id go 6000 years