How Big Is The Universe?

  • Published on: 10 June 2021
  • Is the Universe infinite? Or does it somehow fold in on itself? And if so in what shape? Join us today as explore the size of the Universe. Written and presented by Prof David Kipping, with special thanks to cosmologist Prof Colin Hill for fact checking.

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    Thank-you to our supporters T. Widdowson, D. Smith, M. Sloan, L. Sanborn, C. Bottaccini, D. Daughaday, A. Jones, S. Brownlee, M. Lijoi, Z. Star, T. Zanjonc, C. Wolfred, F. Rebolledo, L. Skov, E. Wilson, M. Elliot, B. Daniluk, J. Patrick-Saunders, M. Forbes, S. Vystoropskyi, S. Lee, Z. Danielson, C. Fitzgerald, V. Alexandrov, L. Macchia, C. Souter, M. Gillette, T. Jeffcoat, H. Jensen, F. Linker, J. Rockett, N. Fredrickson, B. Mlazgar, D. Holland, J. Alexander, E. Hanway, J. Molnar & I. Sandaljian.

    ::References used::
    ► Levin, J. (2001), "Topology and the Cosmic Microwave Background", Phys. Rep., 365, 251:
    ► de Bernardis et al. (2000), "A Flat Universe from High-Resolution Maps of the Cosmic Microwave Background Radiation", Nature, 404, 955:
    ► Bennett et al. (2013), "Nine-Year Wilkinson Microwave Anisotropy Probe (WMAP) Observations: Final Maps and Results", ApJS, 208, 20
    ► Planck Collaboration et al. (2020), "Planck 2018 results. VI. Cosmological parameters", A&A, 641, 60
    ► Park, J. (1970), "The concept of transition in quantum mechanics", Fo. of Phys., 1, 23: [also]

    Music licensed by (SS) [], or via Creative Commons (CC) Attribution License (, or with permission from the artist
    ► Joachim Heinrich - Y
    ► Falls - Ripley
    ► Falls - Life in Binary
    ► Chris Zabriskie - Neptune Flux 1
    ► Chris Zabriskie - Cylinder Four
    ► Chris Zabriskie - Cylinder Five
    ► Stephen Keech - Fable
    ► Painted Deserts - Shimmer
    ► Brad Hill - Fragmented []

    ::Video clips used::
    ► Zoom out through space by ESO/L. Calçada/M. Kornmesser/
    ► Deep field flythrough by ESO/M. Swinbank/Instit. Comp. Cosmology/Durham U
    ► JWST animations by NASA's Goddard Space Flight Center
    ► Jupiter telescope images by J. W. Astronomy
    ► Parallax demonstration by ESA/Gaia/DPAC
    ► Galaxy merger animation by ESO/M. Kornmesser
    ► Expanding universe animation by M. Kornmesser/L. Calcada/NASA/ESA/Hubble
    ► Cosmological simulation by K. Dolag/Deutsches Museum/Universe Cluster
    ► Planck mission animation by ESA
    ► Expanding horizon animation by ESA/
    ► Recombination clip I by R. Kaehler/M. Alvarez/Tom Abel/KIPAC/CITA/Stanford
    ► Recombination clip II by ESO/L. Calcada
    ► WMAP animation by NASA/WMAP Science Team
    ► Planck animation by ESA
    ► Janna Levin footage by The Aspen Institute
    ► Snake footage by Matthias L
    ► Pacman footage by Old Classic Retro Gaming
    ► 2-torus animation by V. Borrelli/S. Jabrane/F. Lazarus/D. Rohmer/B. Thibert:
    ► Multiverse animation by Science Time

    ::Quotes used::
    ► Intro quote from Prof. Janna Levin
    ► Outro quote taken from "The Laughing Heart" by Charles Bukowski

    ::Film/TV clips used::
    ► Ad Astra (2019) - 20th Century Fox
    ► Agora (2009) - Newmarket Films
    ► The Assassination of Jesse James by the Coward Robert Ford (2007) - Warners Bros. Pictures
    ► Cosmos (1980) - PBS
    ► A Beautiful Mind (2001) - Universal Pictures
    ► Passengers (2016) - Sony Pictures Releasing
    ► Interstellar (2014) - Paramount Pictures
    ► The Time Machine (2002) - DreamWorks Pictures
    ► Logan (2017) - 20th Century Fox
    ► Vanilla Sky (2001) - Paramount Pictures
    ► The Theory of Everything (2014) - Focus Features
    ► Prometheus (2012) - 20th Century Fox
    ► Oblivion (2013) - Universal Pictures
    ► Star Trek: The Next Generation - Paramount
    ► Star Wars: The Last Jedi (2017) - Walt Disney Studio Motion Pictures
    ► The Matrix (1999) - Warner Bros.
    ► Somewhere in Time (1980) - Universal Pictures
    ► Into the Wild (2007) - Paramount Vantage
    ► Charlie St. Cloud (2010) - Universal Pictures
    ► The Grey (2011) - Open Road Films
    ► The English Patient (1996) - Miramax Films
    ► Her (2013) - Warner Bros. Pictures
    ► Arrival (2016) - Paramount Pictures
    ► Avengers: Endgame (2019) - Walt Disney Studio Motion Pictures

    ::Follow us::

    SUBSCRIBE to the channel
    Cool Worlds Lab


    #InfiniteUniverse #HowBigIsTheUniverse #CoolWorlds
  • Runtime : 30:18
  • Astronomy Astrophysics Exoplanets Cool Worlds Kipping


  • Matt Rennie
    Matt Rennie   15 hours ago

    He's right, there are an infinite amount of ewes out there. BaaIt's ok I am actually a dad.

  • Matt Rennie
    Matt Rennie   15 hours ago

    "legions of astronomers" no one ever gives thanks to the Engineers/ experimental physicists.The workhorses that make the vision tangible.

  • mackk123
    mackk123   17 hours ago

    picture a guitar string (wound) and imagine the little windings going around the core wire. Now take this string and wind it around a thicker string to an indefinite length. We shall call the "e" string, imagine that it too begines to coil around a wire, it too creating a seemingly never ending length. We shall call this new string, string "B". Now imagine this B string is getting kind of long so we too must coil it for the sake of saving space, so this B string is wound around a thicker wire and then coiled off, to a very long length and now that we have this new string visualized, we can name it string "G". Now this G string is kind of thick, but if we zoom out proportionally to our imaginary presentation, we can fit it onscreen. This G string of very, very, long length then has the privilege its predecessors had as well to be coiled onto another thick wire. If you are still keeping up so far, we have labeled this newer string as the "D" string. This D string consists of a very, very, thick core with a winding of a G string consisting of a very thick core wire with the B string wound around it, it too consisting of a similar matter of the "e" string going around a core wire. Now that we have a very, very, thick "D" string, we can go even further in, and wind this D string around an extremely thick core, this new extended length of wire shall be called the "A" string. Now that we have A string finally constructed, we can conclude our depiction with the final detectable iteration. The Low "E" string. which consists of the A string wound around an outrageously thick core. At this point we have reached the scale of so called string theory and the little stringies at the bottom of metrology are now visible through the lenses of the particulscope.

    TONY WHELAN   18 hours ago

    This is what the internet was made for. Thank you .

  • Master_Wright
    Master_Wright   19 hours ago

    This was the coolest, and most thought provoking video on space I have ever seen! Well done!

  • M W
    M W   20 hours ago

    This has quickly become my favourite youtube channel since i discovered it.

  • Ritch
    Ritch   1 days ago

    I dont believe there's an end of the universe. For example, back in our passed we thought if we would take a ship and go over see, we would fall of an edge. I do believe there where multiple big bangs over time. That would make the universe never ending.

  • Daniel Luna
    Daniel Luna   1 days ago

    I love how well thought out and executed every video on this channel is. This is quality content. What a great ending to a great video. Well done, as always.

  • Xenia Thoma
    Xenia Thoma   1 days ago

    Such an underrated channel ☀️ Thank you for letting us Into your cool world(s)!👍

  • no name
    no name   1 days ago

    that means somewhere out there... she loves me

  • Andy Calvert
    Andy Calvert   1 days ago

    Dude needs to read Cbeebies bedtime stories, he's got a well relaxing voice

  • Ghost C.T.K.
    Ghost C.T.K.   1 days ago

    Not bigger than you can imagine, bigger than you can't imagine.. Yeah. ☯️ eh..! 🙂

  • lidder1973
    lidder1973   1 days ago

    Errr , In the words of the virgin Mary...come again

  • Lee Rogers
    Lee Rogers   1 days ago

    The universe is infinite. A sphere or elongated vast endless bubble of recycled matter at lest 1000 billion light years circumference. Its impossible to travel those distances and to have some kind of wall or screen ending the universe.

  • Raph Ael
    Raph Ael   1 days ago

    So somewhere there is an infinite you version out there that followed their true aspirations and didn't make all of the mistakes that form the biggest regrets..

  • xlucislux
    xlucislux   1 days ago

    I don't think that's a question you humans deserve to know.

  • Eero Iiskola
    Eero Iiskola   1 days ago

    One must remember that time is a human invention. James Webb will prove that the universe is infinite. The Big Bang is nonsense. Warp drive... oh man.

  • Pastor Leroy Little
    Pastor Leroy Little   2 days ago

    What pisses me off is that my 16 year old grandson watched this video with me, and then re explained it to me as if he wrote multiple dimensions for dummies

  • Bunsenn
    Bunsenn   2 days ago

    I’ve always thought that the universe has a finite amount of matter and an infinite amount of space. If the universe is a closed system, then that means it will have the same amount of energy or matter inside at any given time, but it would have infinite space since the matter in the universe is expanding outward at the moment, and may not stop doing so.

  • The Easy Way
    The Easy Way   2 days ago

    And it's me who is taking stress about monday work presentation.

  • Gregor Samsa
    Gregor Samsa   3 days ago

    many Greek concepts in English words and all over the world. However sitting im Europe that "ensemble"(=French) of Dollelgänger(=German) strikes me.

  • Luke Qq
    Luke Qq   3 days ago

    The universe absolutely terrifies me, not many people even think about it and just get on with their lives it’s ridiculous. I’m 19 now and it’s so scary how I’m getting older and older and will eventually die and will not find out out what else there is, I’m literally begging for aliens to visit earth and tell us everything. Life is too short it’s stupid. I really want to find out wtf is happenening

  • Chris L
    Chris L   3 days ago

    Cool. Don't know about y'all but all my great thoughts equal a grain of salt that can be divided and divided into nothingness. So that's pretty humbling.I get the feeling we are looking through a keyhole from a distance that doesn't allow the full view, but we can't help but to peek and try to get closer. Last few seconds was very nice.

  • Spacematter
    Spacematter   3 days ago

    Thank you so much for these videos! for a long time the only source of spoken and presented cosmology physics has been what is shown on tv what I would call "pop science" were concepts aren't explained and discussion isn't part of the presentation. And that bled onto youtube, so i'm really happy to have found your channel!

  • t sam
    t sam   3 days ago

    Bigger than I can wrap my head around.

  • Manny B
    Manny B   4 days ago

    I am fascinated of the universe. Even fascinating is the way you presented facts and realities. Your presentation is comprehendible.👍👏👏👏

  • Thunder Kat
    Thunder Kat   4 days ago

    Also, the collapse of the universe is possible. So…. I don’t think it’s just one universe.

  • Thunder Kat
    Thunder Kat   4 days ago

    What is existence outside of existence?

  • Thunder Kat
    Thunder Kat   4 days ago

    Why infinite? Why not infinite? Is one more shocking than the other?

  • Thunder Kat
    Thunder Kat   4 days ago

    More than 3 dimensions may be necessary

  • DyingCr0w
    DyingCr0w   4 days ago

    Sometimes i get a bit confused why we're told the universe is some 14 billion years old because we see stuff 14 billions light years way. One is measured by our established clock, which has nothing to do with light, the other is established by how fast light travels. So 14 billions years is not the same as 14 billion light years. I may be overthinking it, so i'll go grab another scotch and bail out. I'm pretty sure this is not something so obvious.

  • Thunder Kat
    Thunder Kat   4 days ago

    The simulation theory is like hitting the easy button. But, could be accurate.

  • onethreefiveeye
    onethreefiveeye   4 days ago

    Your eloquence and perhaps your dialect destroys the automatically generated subtitle...which I often use as a non native speaker. Very nice scientifically poetic video. I hope I write no crap...I speak more Genlish...😂thanks for the upload. Greetings from Germany.

  • UniqueRebel
    UniqueRebel   4 days ago

    Storytelling, no real answers. Nice click bait. True knowledge is only for the chosen few for reasons being selfish

  • Devonte Wright
    Devonte Wright   5 days ago

    This video was an emotional roller coaster towards the last 8 mins. Geeze! Very well done. Me and my infinite selfs applaud you.