How Space-Time Works When You Look At The Stars

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  • เผยแพร่เมื่อ 1 ต.ค. 2024

ความคิดเห็น • 360

  • @envixousenvixous5411
    @envixousenvixous5411 3 ปีที่แล้ว +139

    Intelligent life could be swimming throughout the universe and we'd never know it because we're looking so far back in time...

    • @theemperor4901
      @theemperor4901 3 ปีที่แล้ว +12

      This is mind-blowing and amazing

    • @RythmGkwd
      @RythmGkwd 3 ปีที่แล้ว +9

      @Akshay 004 I don't think life on earth is intelligent

    • @ejmtv3
      @ejmtv3 3 ปีที่แล้ว +31

      Also, maybe the reason why aliens don't visit Earth because they still see the dinosaurs roaming around the planet.

    • @nidhinkn5410
      @nidhinkn5410 3 ปีที่แล้ว

      👏👏👏😷👏

    • @dtibor5903
      @dtibor5903 3 ปีที่แล้ว +3

      Probably we are not alone but because of the speed of light, we are alone and we will be alone.

  • @factualhunter2663
    @factualhunter2663 3 ปีที่แล้ว +55

    I'm always excited to know space mysteries from this channel.👌 superb!

    • @keithcoye6121
      @keithcoye6121 3 ปีที่แล้ว +2

      Same

    • @vedantsridhar8378
      @vedantsridhar8378 3 ปีที่แล้ว

      @@keithcoye6121 Yeah!!!

    • @seb9940
      @seb9940 3 ปีที่แล้ว

      Wouldnt call them "mysteries" when most people who invested a little bit of time to learn and understand them would know

  • @nickryckx7817
    @nickryckx7817 3 ปีที่แล้ว +31

    2:44 I really love the supersonic ambulance!

  • @yash1311
    @yash1311 3 ปีที่แล้ว +21

    "A long time ago in a galaxy far, far away...."
    George Lucas knowingly or unknowingly knew about this thing back in the 70's.

    • @jdh9419
      @jdh9419 ปีที่แล้ว +1

      Yeah, but we can’t watch Star Wars through the JWST so…

  • @jawadatal9103
    @jawadatal9103 3 ปีที่แล้ว +20

    First, Fruitful information thank you. In addition, We would love to know about the movement of Moon, in what direction does it go? And how bigger is it? Moreover, If you talk about the Galaxies which one is the most preeminent among them and finally, I really loved the way you explained thanks for the confidence. I’ll love to learn more from you. Love from a war ravaged 🇦🇫.

    • @massimookissed1023
      @massimookissed1023 3 ปีที่แล้ว +5

      The moon orbits in the same direction as Earth's spin.
      If Earth wasn't spinning, you'd see the moon moving West to East at about ½° per hour, or its own width per hour.
      Earth spins faster than the moon orbits, so we actually see it going East to West.
      The moon is about ¼ the diameter of Earth, yet is only 1/80th of Earth's mass.

    • @davidb2331
      @davidb2331 3 ปีที่แล้ว +1

      The moon is moving away from Earth!!🤪🤓

    • @Think_Inc
      @Think_Inc 3 ปีที่แล้ว +2

      @@davidb2331 And so are we, in a lot of different ways.

    • @azizulislamashiksm-1842
      @azizulislamashiksm-1842 3 ปีที่แล้ว +2

      Just to add to what others said:
      When the moon formed it was very close to us, but because earth is bigger earth kept pulling on the moon with its gravity and slowed down its rotation speed and now moon is "tidally locked" with earth. That's why we always see the same side of the moon.
      Also the moon is slowly drifting away from earth and earth's gravity will eventually stop this and the moon will start to get closer again, but it's a very very slow process.

  • @BobMotster
    @BobMotster 3 ปีที่แล้ว +30

    Ah, the James Webb telescope - always in the future, never in the present. Will we live to see it in operation?

    • @stevenARTify
      @stevenARTify 3 ปีที่แล้ว +4

      Lol they started working on this back in 1996. 2 years after I was born. I'm now 26

    • @kotor1357
      @kotor1357 3 ปีที่แล้ว +2

      You would know how hard it is, if you worked on it.
      Once you're going to send it to space you can't bring it back to do upgrades and stuff.
      James Webb is almost Completed.
      But there can't be any mistakes
      It can also see stuff at many wavelengths of light.

    • @stevenARTify
      @stevenARTify 3 ปีที่แล้ว +1

      @@kotor1357 yeah it wouldn't be great if they rushed it and didn't ensure it works properly then it ends up being useless in space.

    • @kotor1357
      @kotor1357 3 ปีที่แล้ว +3

      @@stevenARTify lol..it's not like that bad,people at NASA aren't that dumb...the James Webb will be in an L2(or L3...I don't know much) orbit ...which doesn't give it an opportunity to repair it or do a tiny tiny upgrade.(like How Hubble telescope was repaired ...by doing a spacewalk from the international station).

    • @hayden1634
      @hayden1634 3 ปีที่แล้ว +2

      @@kotor1357 not only do they need to do that but telescopes also need to undergo collimation to make sure their images are sharp, but its in space so it has to be able to collimate itself or be super tight and everything perfectly in place

  • @GP-qb9hi
    @GP-qb9hi 3 ปีที่แล้ว +4

    "Today, we've calculated that speed down to the nanosecond."
    First of all speed is not measured in time units.
    Second of all, the speed of light is by definition exactly 299.792.458 m/s not any tiny bit more or less.

  • @booJay
    @booJay 3 ปีที่แล้ว +8

    2:22 "the light sticks to the fabric of space-time" great visual to explain to people how redshift works.

  • @dakotadad8835
    @dakotadad8835 3 ปีที่แล้ว +8

    My favorite topic, especially from this channel 👍 so many new faces on seeker

  • @SB_3.1415
    @SB_3.1415 3 ปีที่แล้ว +8

    Come on doppler shift and cosmological redshift are not the same!

  • @dobfankris
    @dobfankris 3 ปีที่แล้ว +7

    I get goosebumps just seeing JWST footage - I hope it lives up to the potential. Great series here :)

  • @shikhadwivedi2805
    @shikhadwivedi2805 ปีที่แล้ว +2

    I'm sorry but I'm still little confused about star thing ..how we see them in past...can anyone explain plz

  • @SunShine-kd6td
    @SunShine-kd6td 3 ปีที่แล้ว +2

    I don't know how you could possibly say "billions of years". No one knows. And no one knows how far away that light is.

  • @YoosufMuneer
    @YoosufMuneer 3 ปีที่แล้ว +8

    I'm really enjoying this series, Sarafina!

  • @potatomatop9326
    @potatomatop9326 3 ปีที่แล้ว +13

    That feeling when you look at the stars alone without a girlfriend.

    • @Spaceranger-7
      @Spaceranger-7 3 ปีที่แล้ว

      🥺👍

    • @VIPINSAINI_20
      @VIPINSAINI_20 3 ปีที่แล้ว +1

      Forever Alone Guy

    • @dipanjanghosal1662
      @dipanjanghosal1662 3 ปีที่แล้ว +3

      And then I look at my phone and do some evil deeds

    • @nirui.o
      @nirui.o 3 ปีที่แล้ว +3

      It's better. You don't have time to watch the star if you got a girl friend with you

    • @r4ymaster
      @r4ymaster 3 ปีที่แล้ว +6

      Dude don't be so lame, stop wishing for a gf and start truly living your life, then she will come to you.

  • @Yathuprem
    @Yathuprem 3 ปีที่แล้ว +14

    4:23 HAHA High Redshift Astrophysicist

  • @talia3280
    @talia3280 3 ปีที่แล้ว +4

    Could you explain how we calculate how quickly we're moving through the cosmos?

  • @tristanosborne6994
    @tristanosborne6994 3 ปีที่แล้ว +8

    That's weird, i was literally thinking about this earlier today

    • @SagarSagar-ro3fj
      @SagarSagar-ro3fj 3 ปีที่แล้ว

      Phone sniffs

    • @vedanshaggarwal6962
      @vedanshaggarwal6962 3 ปีที่แล้ว

      Me too

    • @PoppiPuff
      @PoppiPuff 3 ปีที่แล้ว

      There are almost 8 billion humans on this planet, there's always someone thinking about any subject covered in youtube news

  • @DylanCVlogTV
    @DylanCVlogTV 3 ปีที่แล้ว +3

    2:35 Although the expansion of spacetime is somewhat concrete in academia, the comparison of sound waves to spacetime expansion is completely false.
    Compression and decompression of sound waves through additive and subtractive velocities is not equivalent to space time expansion in it's current theoretical state.

    • @snowkracker
      @snowkracker 2 ปีที่แล้ว

      She was explaining red shift using an analogy smart guy.

  • @hamidowonderland2309
    @hamidowonderland2309 3 ปีที่แล้ว +4

    ‏Who saw my comment
    ‏I wish you great joy♥️♥️♥️♥️

  • @Storystein
    @Storystein 3 ปีที่แล้ว +1

    I have a question:
    At 3:28, How can that galaxy be 32 billion light years away? Even assuming we are on one end on the universe, and the galaxy lies on the other side, wouldn't the maximum distance in our universe be 13,8 + 13,8 = 27,6 billion lightyears? This puzzels me! Does the universe expend faster than the speed of light? What am I missing here?
    EDIT: typo

  • @rickseiden1
    @rickseiden1 3 ปีที่แล้ว +2

    What always blows my mind is how we talk about things in the sky in the present tense even though we all know that we're seeing them in the past. Like, people will say, "Betelgeuse is going to go supernova any day now." But Betelgeuse is 645 some light years away. It could have gone supernova 600 years ago, and we still wouldn't know for another 45 years. I get that it's the only way we can talk about it, but it still blows my mind.

  • @poleun9
    @poleun9 3 ปีที่แล้ว +1

    This maybe a stupid question, wouldn't we have to be 13.8 billion lightyears away from the beginning of the universe, for the light to travel to us?

  • @danielsainz866
    @danielsainz866 8 หลายเดือนก่อน +1

    If nothing can travel faster than the speed of light, how is this possible? Unless we're all traveling away from each other (which we aren't) at near the speed of light it sounds impossible. From my point of view the only way this can happen is if they were alway there and we were alway here.

  • @Repasado1894
    @Repasado1894 ปีที่แล้ว +1

    I’ve always thought that we are alone in the universe and always will be. By the time we see anything from another galaxy so much time has passed that a whole civilisation could be extinct. But then I also believe in the theory, that if aliens exist they could truly be time travelling humans coming back to the past for whatever reason

  • @christineevasco578
    @christineevasco578 3 ปีที่แล้ว +1

    there must have been a mistake in sharing some information here, the universe is not yet confirmed if it is expanding or shrinking

  • @visheshsharma93
    @visheshsharma93 3 ปีที่แล้ว +3

    I thought the oldest we could see in the universe was CMB. Surely the light of the CMB is older than that Galaxy

    • @jeremymanson1781
      @jeremymanson1781 3 ปีที่แล้ว +1

      I think you are correct. This galaxy is the oldest known galaxy rather than the oldest known phenomenon.

  • @azizulislamashiksm-1842
    @azizulislamashiksm-1842 3 ปีที่แล้ว +2

    Because JWST will be able to see in deep infrared, I'm hoping we'll get to see some of the oldest stars and galaxies, if they ever launch the damn thing in the first place! 😑
    (You guys are doing great job with the show btw! Keep going!!)

  • @mrpdub2472
    @mrpdub2472 3 ปีที่แล้ว +2

    Q: Are constellations actually in the same system or are they just seperate stars that happen of be bright enough to form a pattern from out prospective?

    • @IanGrams
      @IanGrams 3 ปีที่แล้ว +1

      The latter option for the vast majority. The only group of stars that is a part of an asterism or constellation that are also near each other and moving in the same direction are all but 2 stars in the "Big Dipper" which is a subset of Ursa Major. This is called the Ursa Major Moving Group: en.wikipedia.org/wiki/Ursa_Major_Moving_Group
      I use an app called Star Walk 2 that allows you to view constellations from different angles (though this might be part of an in-app purchases, I can't recall) to see how the stars that make them up only look near to each other from our perspective. In the distant future the constellations will look quite different. I'd definitely like an episode on that, if you're reading these comments Seeker :P
      Correction: UMMG isn't the only one, the Pleiades is also considered an asterism so that would also be included, here's a list of nearby ones: en.wikipedia.org/wiki/List_of_nearby_stellar_associations_and_moving_groups

    • @IanGrams
      @IanGrams 3 ปีที่แล้ว

      @Smee Self The Pleiades are not a constellation which is what the original question was about.
      But they are considered an asterism so I'll update my comment.
      "Colloquial usage does not draw a sharp distinction between "constellations" and smaller "asterisms" (pattern of stars), yet the modern accepted astronomical constellations employ such a distinction. E.g., the Pleiades and the Hyades are both asterisms, and each lies within the boundaries of the constellation of Taurus."

  • @Eisenwulf666
    @Eisenwulf666 3 ปีที่แล้ว +2

    Very informative. Sarafina is gorgeous by the way 😊

  • @sciencetablet2634
    @sciencetablet2634 3 ปีที่แล้ว +5

    Hello, im a tachion coming from the futute to be the first commenting

    • @ImieNazwiskoOK
      @ImieNazwiskoOK 3 ปีที่แล้ว +2

      Tachions most probably don't exist

    • @im_cosmos
      @im_cosmos 3 ปีที่แล้ว +1

      First learn spelling of tachyon

    • @vtwl24
      @vtwl24 3 ปีที่แล้ว

      Fitite

    • @Think_Inc
      @Think_Inc 3 ปีที่แล้ว +1

      @@im_cosmos The spelling of tachyons may be different in the future. So, this “tachion” could really be from the future.

  • @Steve_Jaz
    @Steve_Jaz 3 ปีที่แล้ว +7

    as an engineer, it gives me anxiety knowing that 90% of the world don't know these facts

    • @09patrick22barnes95
      @09patrick22barnes95 3 ปีที่แล้ว

      I feel so isolated from everyone because of it.

    • @ZombiesAteMyTV
      @ZombiesAteMyTV 3 ปีที่แล้ว +1

      ..and most of people aren't even interested in it after you try to tell them. That is way worse in my opinion, isn't it?

  • @DarthAdii
    @DarthAdii 3 ปีที่แล้ว +1

    I really hope I'm alive to see the birth of the Universe.....

  • @andyreznick
    @andyreznick 3 ปีที่แล้ว +2

    OK, since you asked: I'd like to see something on voids/super voids and ideas about how they formed and how/why they differ from the rest of the universe.

  • @vedanshaggarwal6962
    @vedanshaggarwal6962 3 ปีที่แล้ว +2

    Hey, can you please tell me if we can make a camera which is not based on light using our current technology? With a camera which is not based on light, we can see stars and other distant objects in their current state throughout the whole universe. But I think there is only a small chance that it is not possible. And if it is possible, we have to trick time and find a new medium of vision which does not involve time, which is REALLY difficult or even IMPOSSIBLE

    • @jamietheg0d
      @jamietheg0d 3 ปีที่แล้ว

      radio telescope.

    • @ImieNazwiskoOK
      @ImieNazwiskoOK 3 ปีที่แล้ว

      @Jamie Hart It's still wagę do still kinda light

    • @vedanshaggarwal6962
      @vedanshaggarwal6962 3 ปีที่แล้ว

      @@jamietheg0d the radio waves will also take time to travel.

    • @massimookissed1023
      @massimookissed1023 3 ปีที่แล้ว +1

      The speed of light is the speed of information and causality.
      Unless you feel confident enough to argue with Einstein, we can *never* exceed the speed of light.

    • @vedanshaggarwal6962
      @vedanshaggarwal6962 3 ปีที่แล้ว

      @@massimookissed1023 we don't have to use light in this camera.

  • @bendadestroyer
    @bendadestroyer 3 ปีที่แล้ว +4

    *Can you stop making every sentence a question.*

    • @jerimow8400
      @jerimow8400 3 ปีที่แล้ว

      Lol....millennials....

    • @massimookissed1023
      @massimookissed1023 3 ปีที่แล้ว +1

      I like how you phrased your own question as a statement, by omitting a question mark at the end.
      Wait, no I dont.

    • @bendadestroyer
      @bendadestroyer 3 ปีที่แล้ว

      It was a passive order and not so much a question. Also, speaking is more intuitive than writing.

  • @jasonemryss
    @jasonemryss 3 ปีที่แล้ว +1

    They don't know what they're talking about....

  • @DaBlondDude
    @DaBlondDude 3 ปีที่แล้ว +2

    I'm curious about how we estimate/know the size an shape of our universe when, observationally we're struck in an expanding event horizon based on the speed of light

  • @conween
    @conween 3 ปีที่แล้ว +3

    This is a great compact way to explain it! love it

  • @anime36O
    @anime36O 3 ปีที่แล้ว +1

    Help me out. I get if you look at a start, you're seeing the light from the past.
    But can you also look at that same star when it was born. And does this work, you look in another direction or deeper in space?
    And if not, how will scientists ever find the first light of the beginning of the universe.

    • @arvindiyer1649
      @arvindiyer1649 3 ปีที่แล้ว

      Its a nice question, unfortunately, to which I know not the answer

  • @dreamliner495
    @dreamliner495 2 ปีที่แล้ว +1

    Are those stars still exist on present day? How do we know?

  • @PerpetualTiredness
    @PerpetualTiredness 3 ปีที่แล้ว +1

    How do we know what frequency of light these stars are emitting before the Doppler effect? Isn't there an assumption being made?

    • @IanGrams
      @IanGrams 3 ปีที่แล้ว

      We've observed the spectral lines of hydrogen and helium in gas discharge tube experiments and we see the same lines in all stars we take spectral measurements of. So it's not so much an assumption but rather an inference that stars are largely composed of hydrogen and helium with trace amounts of heavier elements which we can also determine from their spectrum. It also makes sense from the perspective that hydrogen is the simplest element so most of the atoms in the universe are hydrogen and all heavier elements have to be produced from stellar fusion, supernovas, or neutron star mergers.

  • @dakotadad8835
    @dakotadad8835 3 ปีที่แล้ว +3

    More space!! More time paradoxes!! I love it

  • @donnytheflow
    @donnytheflow 3 ปีที่แล้ว +2

    I get that the vast distances change the wavelength of the light thereby giving us a limited view of what once was. Assuming these star and their systems were still around, what would it take (or what would the telescopic requirements need to be) in order to see them in real time?

    • @Pr_visto12
      @Pr_visto12 ปีที่แล้ว

      I’m pretty sure it’s not physically possible, but I’m sure that some day super far in the future we’ll be able to do that😭

  • @jeanosorio1
    @jeanosorio1 3 ปีที่แล้ว +1

    This was very in-LIGHT-ning to hear
    No?
    ill stop lol

    • @daxxonjabiru428
      @daxxonjabiru428 3 ปีที่แล้ว +1

      Nice try but ...you may now show yourself out ...

  • @naveenraj2008eee
    @naveenraj2008eee 3 ปีที่แล้ว +2

    Hi seeker
    This new series is awesome to watch..
    Thanks 👍🙏

  • @johnshepherd6925
    @johnshepherd6925 3 ปีที่แล้ว +2

    Damn...Sarafina is thicc af 😍

  • @ICanSeeSharp
    @ICanSeeSharp 3 ปีที่แล้ว +2

    Doppler effect is not the reason for redshift in cosmic scale... x)

  • @LaibaStarXX
    @LaibaStarXX 3 ปีที่แล้ว +4

    Need more space related stuff on this channel!🙏🏻

    • @v8soarer1991
      @v8soarer1991 3 ปีที่แล้ว +1

      SciShow Space

    • @IanGrams
      @IanGrams 3 ปีที่แล้ว +2

      I second the SciShow Space recommendation.
      Some other space-focused channels I enjoy:
      * PBS Space Time
      * Dr. Becky
      * DeepSkyVideos
      * Sixty Symbols

  • @conexant51
    @conexant51 3 ปีที่แล้ว +1

    I think that ambulance went supersonic.

  • @isotropicantenna
    @isotropicantenna 3 ปีที่แล้ว +1

    That ambulance at 2:35, broke the sound barrier. 🙁

  • @flowwiththeuniverse31
    @flowwiththeuniverse31 3 ปีที่แล้ว +1

    The past present and the future all exists at the same time!

  • @10thdim
    @10thdim 3 ปีที่แล้ว

    At 2:40 - “It’s the same reason why ambulance sirens seem to get higher in pitch as it passes you. The waves are getting shortened then stretched out again.”
    To be clear, when the vehicle approaches you its sound waves are being shortened so they sound higher in pitch, but once it passes you the waves are being lengthened, so they sound lower, not higher. Lowered pitch is equivalent to red shift.
    But since an ambulance siren is already rising and falling in pitch the effect is not always obvious. A car horn, on the other hand, is a steady pitch so it’s very easy to hear the Doppler shift as the vehicle passes you, with you hearing the horn at a raised pitch as it moves towards you and a lowered pitch as it moves away from you.

  • @KaysClip
    @KaysClip 2 ปีที่แล้ว +1

    so our eyes have latency

  • @AeroDepartment
    @AeroDepartment 3 ปีที่แล้ว +2

    1:56 it also takes time for the light to get processed by the brain so that adds milliseconds to the delay

    • @AnujMishra-is5uf
      @AnujMishra-is5uf 3 ปีที่แล้ว

      In science, there is difference between seeing and observing.

  • @_MintArcade
    @_MintArcade 3 ปีที่แล้ว +1

    Its called Cosmo-latency

  • @juniorm853
    @juniorm853 3 ปีที่แล้ว +1

    Dude i was asking myself this question last night and wanted a better explanation then here i am waking up to this😱

  • @mr.perfectbeing2466
    @mr.perfectbeing2466 3 ปีที่แล้ว +1

    I mean what if aliens are there but not visible cuz we lookin in the past🤔

  • @dannypope1860
    @dannypope1860 3 ปีที่แล้ว +1

    Seeker. We only interview women.

  • @huh2275
    @huh2275 3 ปีที่แล้ว

    According to Harvard, light has been sown to slow down to 36, yes 36, mph.

  • @laclipperhandsthebarbur
    @laclipperhandsthebarbur 3 ปีที่แล้ว +2

    Great info

  • @saquibrakhangi8976
    @saquibrakhangi8976 3 ปีที่แล้ว +1

    So we mustve come across a planet bearing life, but we couldn't have recognized it because we saw it how it was...!?!!!???!!

    • @viljosavolainen2286
      @viljosavolainen2286 3 ปีที่แล้ว

      I doubt we could detect planets that far away to make too much a difference.

  • @Ctrl_Alt_Elite
    @Ctrl_Alt_Elite 3 ปีที่แล้ว

    Never really though about a 3rd person perspective of Earth. It's such a mindf*ck 🤯
    If a current-human equivalent or advanced alien civilisation exists and observes Earth, they would be seeing the Earth of the past. So which present moment is the true present?

  • @josevenegas9191
    @josevenegas9191 3 ปีที่แล้ว +1

    Very interesting. My question is, how cosmologists make precise models of early universe through the CMB?

  • @PTGaonkar
    @PTGaonkar 2 ปีที่แล้ว

    Atleast you quoted about Indian astronomers.. and physicists because meny Indians themselves don't believe about that....

  • @ray1956
    @ray1956 3 ปีที่แล้ว

    It is pointless to resist. TALK NERDY to me👏🏿👏🏿👏🏿👏🏿😃👨🏿‍⚕️👨🏿‍⚕️

  • @fritt_wastaken
    @fritt_wastaken 3 ปีที่แล้ว

    Dont get me wrong, this chanel is great and all, but who is the target audience for this video?
    Information here is so common and simplified, so you would think it's for kids. Yet its presentation and the title suggests that it's maybe for young adults.
    So is it just an attempt to fit all buckets, or to get free engagement via confirmation bias?
    Really dont like this kind of non-specific videos from science channels.

  • @johnh539
    @johnh539 5 หลายเดือนก่อน

    The speed of anything including light is distance covered over a given amount of time so if you could watch a light beam moving through a much heavier gravitational environment than ours it would apear slower.
    only if you where inside that gravitational environment would it apear un changed.

  • @alexkool3511
    @alexkool3511 3 ปีที่แล้ว

    We still don't know one way Speed of light..... It is assumed that light travel time is similar for both ways. One theory is light took twice the time to go to moon and instantly comes back... In this way we might be looking at live action of present and not from past!!!!!

  • @iam_anand
    @iam_anand 3 ปีที่แล้ว +1

    Universe - light is too slow. 😆😆😆

  • @erebology
    @erebology 3 ปีที่แล้ว

    The Doppler shift occurs at all scales, not just far away. For example, I'm typing this text in your future, and you will read it in my past.

  • @AnupamKumar-qv6zm
    @AnupamKumar-qv6zm 3 ปีที่แล้ว

    If someone is looking at the earth (now) from 4.6 billion light year away
    Will that person see anything
    Theoretically he shouldn't see anything .

  • @rajdeepmotilal
    @rajdeepmotilal 3 ปีที่แล้ว

    Please stop telling lies. In India we knew a long ago about the speed of light, the time dilation principle and many other things. This is another way how westerners want to take credit for Eastern knowledge. Simply disgusting.

  • @akshayabhaykhandare8353
    @akshayabhaykhandare8353 3 ปีที่แล้ว

    Can you explain the topic of black holes with Einstein's general relativity theory.

  • @6Monto
    @6Monto 5 หลายเดือนก่อน

    somehow i dont wanna believe about this enourmeous distances about being so far away that we looking at the past, it just doesn't make sense to me.

  • @BBWinner48
    @BBWinner48 3 ปีที่แล้ว

    Is our measurement of time the same through out the cosmos?, Our earth has 24 hour rotation, 365 day rotation... so we base time on our earth motion?..

  • @Afslv
    @Afslv ปีที่แล้ว

    "So when we look at each other, do we see each other in the past? And if we look in the mirror, do we see ourselves in the past? Then the questions are, where is the present, and do we each have our own present?"

  • @snowkracker
    @snowkracker 2 ปีที่แล้ว

    What’s the plan for when the James Webb telescope is struck by a tiny piece of space debris? Is that a concern?

  • @bread4607
    @bread4607 2 ปีที่แล้ว

    I feel like I’m supposed to be watching this in class but I’m just cereous

  • @GoodSongs4all
    @GoodSongs4all 3 ปีที่แล้ว

    What's the meaning of research then, if you can't see the present? Why look in to the past? No benefits.

  • @patrickwilmot
    @patrickwilmot ปีที่แล้ว

    So I know we can look back in into the future. When I am wondering is how far into the future are we able to look

  • @DaBlondDude
    @DaBlondDude 3 ปีที่แล้ว

    34 = 13.2, yet another new math, backed by science
    =P

  • @ParOtechnic
    @ParOtechnic 3 ปีที่แล้ว

    How does the astronomical community triangulate the distance of a how far a star is.

  • @randomuser3053
    @randomuser3053 3 ปีที่แล้ว +1

    Actually even our eyes don't see in real time. We see less then a millisecond in the past

    • @filonin2
      @filonin2 3 ปีที่แล้ว

      1:50

    • @randomuser3053
      @randomuser3053 3 ปีที่แล้ว

      @@filonin2 oh shi I missed that

    • @randomuser3053
      @randomuser3053 3 ปีที่แล้ว

      @@filonin2 thanks for doing that instead of making a big deal of my mistake

    • @filonin2
      @filonin2 3 ปีที่แล้ว

      @@randomuser3053 np

  • @thetacoguyy
    @thetacoguyy 3 ปีที่แล้ว

    Maybe that's why it is hard to find life in other planets ?

  • @jonathonjubb6626
    @jonathonjubb6626 3 ปีที่แล้ว

    What is intrinsic red shift? Nobody will explain it to me...

  • @stevesastrohowardkings2245
    @stevesastrohowardkings2245 3 ปีที่แล้ว

    If where all traveling away from each other how come the stars are in same location permanently

  • @adityaagung4916
    @adityaagung4916 3 ปีที่แล้ว

    So can we see our earth's birth around 4.3 billion years ago?

  • @SahilJaiswal8047
    @SahilJaiswal8047 3 ปีที่แล้ว +1

    Love astronomy

  • @tightlines106
    @tightlines106 3 ปีที่แล้ว

    If you see light from the past how do we see it in the future where is the light expanding to

  • @safirouhi1651
    @safirouhi1651 3 ปีที่แล้ว +5

    “Light travels at a constant speed”
    VSL theories: “am I a joke to you?”

    • @CausticLemons7
      @CausticLemons7 3 ปีที่แล้ว

      Do any VSL theories include the possibility of FTL? If not, I don't want to hear about more depressing universal limitations lol

    • @andyreznick
      @andyreznick 3 ปีที่แล้ว

      Yeah. She should have added: "In a vacuum". I guess she thinks we're smart enough to figure that out on our own. Well, we're not, thank you very much.

  • @shannon8781
    @shannon8781 3 ปีที่แล้ว

    like spilling a cup of water.. the last of the spilled water has yet to hit the floor
    🐍💀🔱

  • @AliBenBrahim-s9x
    @AliBenBrahim-s9x 5 หลายเดือนก่อน

    Light doesn't experience time so when I see a galaxy in the sky I see it as it is.

  • @akshumkapoor4723
    @akshumkapoor4723 3 ปีที่แล้ว

    What made all stars and planets take their shape as spheres and how did life appear on earth 🌍.

  • @birdsofprey3312
    @birdsofprey3312 3 ปีที่แล้ว

    Ok seeing light rays as they were raises my question of Huge stars going supernova, How do we know that a supernova didn’t happen say 100 human years I.e. Beetlejuice since that light hasn’t reached us yet?

    • @massimookissed1023
      @massimookissed1023 3 ปีที่แล้ว +1

      We _don't_ know that eg. Betelgeuse hasn't already popped.

  • @SnoopyDoofie
    @SnoopyDoofie 3 ปีที่แล้ว

    Don't cover your credits with your logo.

  • @zlac
    @zlac 3 ปีที่แล้ว

    We will one day put a mirror 12 light hours away from earth and have a telescope pointed at it. Then when there's a traffic accident, homicide or similar, we will look at it 24 hours later to find the guiltier!😁

  • @TheWaleedKhalid
    @TheWaleedKhalid 3 ปีที่แล้ว

    Hey Seeker team. I don't know If you're reading this. I request you to please make a video video about constellation Aquila (It's history, it's stars, etymology,where to spot it, etc).
    *Why constellation Aquila?*
    Eagle is my favourite bird and constellation Aquila represents Eagle that's why.

  • @Blooby69
    @Blooby69 3 หลายเดือนก่อน

    Light really makes us stuck in the past

  • @adamwishneusky
    @adamwishneusky 3 ปีที่แล้ว

    Astrophysicist Dr Sarafina Nance! woo!