Deep Time: Crash Course Astronomy #45

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  • čas přidán 15. 06. 2024
  • As we approach the end of Crash Course Astronomy, it’s time now to acknowledge that our Universe’s days are numbered. Stars will die out after a few trillion years, protons will decay and matter will dissolve after a thousand trillion trillion trillion years, black holes will evaporate after 10^92 years, and then all will be dark. But there is still hope that a new Universe will be born from it.
    Check out the Crash Course Astronomy solar system poster here: store.dftba.com/products/crash...
    If you want to learn more about the creation and death of the universe, watch Crash Course Big History here: • Big History
    --
    Chapters:
    Introduction: The End of the Universe 00:00
    Scientific Notation 1:34
    The Five Ages of the Universe 2:20
    The Primordial Era 2:52
    The Stelliferous Era (You Are Here!) 3:05
    The Degenerate Era 4:48
    The Black Hole Era 7:42
    The Dark Era 9:39
    The Big Rip 10:20
    Other Possibilities: Multiverses & The Cosmic Reboot 11:52
    Review 14:10
    --
    PBS Digital Studios: / pbsdigitalstudios
    Follow Phil on Twitter: / badastronomer
    Want to find Crash Course elsewhere on the internet?
    Facebook - / youtubecrashcourse
    Twitter - / thecrashcourse
    Tumblr - / thecrashcourse
    Support CrashCourse on Patreon: / crashcourse
    --
    Hawking Radiation Mechanism resources:
    en.wikipedia.org/wiki/Hawking...
    math.ucr.edu/home/baez/physics...
    casa.colorado.edu/~ajsh/hawk.html
    physics.stackexchange.com/ques...
    PHOTOS/VIDEOS
    Hubble ACS SWEEPS Field hubblesite.org/gallery/album/s... [credit: NASA, ESA, W. Clarkson (Indiana University and UCLA), and K. Sahu (STScI)]
    Flare www.nasa.gov/sites/default/fil... [credit: NASA's Goddard Space Flight Center/S. Wiessinger]
    Hubble Views Stellar Genesis in the Southern Pinwheel hubblesite.org/newscenter/arch... [credit: NASA, ESA, and the Hubble Heritage Team (STScI/AURA)]
    White Dwarf www.nasa.gov/multimedia/imageg... [credit: NASA, ESA, H. Bond (STScI) and M. Barstow (University of Leicester)]
    Neutron Star Illustrated commons.wikimedia.org/wiki/Fi... [credit: NASA, Casey Reed - Penn State University]
    Black Holes: Monsters in Space www.nasa.gov/mission_pages/nus... [credit: NASA/JPL-Caltech]
    Binary Neutron Star Video nasaviz.gsfc.nasa.gov/vis/a03... [credit: NASA]
    Giant Elliptical Galaxy NGC 1316 in Fornax Cluster www.eso.org/public/images/eso... [credit: ESO]
    Proton Aurora svs.gsfc.nasa.gov/cgi-bin/deta... [credit: NASA/Goddard Space Flight Center Conceptual Image Lab]
    A Race Round a Black Hole www.nasa.gov/centers/goddard/u... [credit: NASA/Dana Berry, SkyWorks Digital]
    The Big Bang svs.gsfc.nasa.gov/cgi-bin/deta... [credit: NASA]
    Hubble Ultra Deep Field 2014 hubblesite.org/newscenter/arch... [credit: NASA, ESA, H. Teplitz and M. Rafelski (IPAC/Caltech), A. Koekemoer (STScI), R. Windhorst (Arizona State University), and Z. Levay (STScI)]
    Galaxy apod.nasa.gov/apod/ap150614.html [credit: Subaru Telescope (NAOJ), Hubble Space Telescope, Robert Gendler]
    One star, many stars (M13) www.deepskycolors.com/archive/... [credit: Rogelio Bernal Andreo]
    Earth www.nasa.gov/content/goddard/... [credit: NASA's Earth Observatory]
    Explosion video [credit: Shutterstock / Richard Finch]

Komentáře • 3,8K

  • @americathegreat1811
    @americathegreat1811 Před 4 lety +697

    You know you are dealing with incomprehensible time scales when someone states, "I am not going to worry about factors of ten".

  • @StopChangingUsernamesYouTube
    @StopChangingUsernamesYouTube Před 6 lety +1237

    I've always found it fascinating how we, creatures that currently live under a century on average, can look at theories about the eventual fate of the universe, time enough away to make the span of our entire species into a statistical blip, and feel existential dread and sorrow over drifting away from the rest of the universe, far past the likely end of all intelligent life that probably is and will be. We may be short-lived on such a scale, but our minds can feel out to the depths of eternity.

    • @-nazhifah
      @-nazhifah Před 5 lety +80

      this is warming to read somehow

    • @androkguz
      @androkguz Před 4 lety +53

      Beautifully written

    • @androkguz
      @androkguz Před 4 lety +80

      @Rocknrolladube what a troll comment.
      Some systems are chaotic and others aren't. The weather tomorrow is hard to guess. The position of the stars in a millenia are not.
      The deep time predictions fall into the latter gruop

    • @rshiva08
      @rshiva08 Před 4 lety +6

      @William Shreckengost: I love your comment. Hope you don't mind if I use it as a quote! With credits to you of course :)

    • @paullilly9645
      @paullilly9645 Před 4 lety +39

      @Rocknrolladube when youre dealing with trillions of units of time measurement the timing is more or less irrelevant. But the fact remains the same. We know it will rain in the future, tomorrow might be a good guess. But it IS an inevitability. Astronomical and celestial bodies, much less the universe, have no will want or need to conform to a manmade conception such as time. Look at it not as a literal timeframe, but as a roughed out general direction.

  • @maxmccormick3376
    @maxmccormick3376 Před 6 lety +571

    I love how at this scale 10 trillion years is a "statistical fluctuation"

    • @handhdhd6522
      @handhdhd6522 Před 4 lety +7

      No several 10s of thousands of years are...

  • @GLASSB182
    @GLASSB182 Před 6 lety +276

    And after all those eons, the universe said, "let's have another one."

    • @VaughanMcAlley
      @VaughanMcAlley Před 5 lety +22

      A new universe born from a cosmic typo.

    • @michiel7716
      @michiel7716 Před 4 lety +18

      Aalwaays look on the briiight side of life....*whistles*

  • @Clockworkcityofpain
    @Clockworkcityofpain Před 7 lety +921

    "there's always hope"
    what a wonderful way to end a video about the end of everything

    • @Clockworkcityofpain
      @Clockworkcityofpain Před 7 lety +7

      Okay WhyNot actually, I've read that about that too. It's just slightly difficult to wrap our tiny humans brains around the idea of it. Or at least, it's kinda difficult for it

    • @Rattielicious
      @Rattielicious Před 7 lety +9

      nothing ends, nothing begins. Even with a start point of 'big bang' or any other we can figure, this is not a true start, it is a change/transformation. Its all about changes and cycles, nothing stops existing and nothing comes into existing, its only transformed )as far as we can currently figure). However, then we are left with lots of answers without any real answers lol as we are then stuck with WHY does anything exist at all. I theorize this is why god/gods were invented and in a way they are correct (as in it might be correct to attribute existence to an unknowable force) but to make it more understandable/easier to relate (and other motives), this force/forces were personified and given various names (same as for the unknown elements that became gods etc).This invented an answer to 'why' that kept most people happy....for a while...then the understanding of 'how' grew with new world views and the question of 'WHY' seems even more perplexing lol. Achieved a lot without achieving anything, we still do not know why! haha let alone any way to know a true start point (assuming there is one). Almost like trying to find the corner of a circle :P

    • @bananian
      @bananian Před 7 lety +13

      Everything that has a beginning has an end.

    • @bopyourhead9584
      @bopyourhead9584 Před 7 lety +13

      Missy West; I have had similar thoughts, there is only form and structure, it is the changing of form that gives the illusion of time. I don't really believe there is a beginning or end just infinite change.

    • @lordpinochetuttp3819
      @lordpinochetuttp3819 Před 6 lety +3

      +bananian Which means that an end has an end, considering that an end has a beginning and so on?

  • @theaboutroundand
    @theaboutroundand Před 7 lety +2505

    on the bright side, even at a modest rate of interest, just imagine the value of your investments in 10^92 years

    • @hiphiphorhayy
      @hiphiphorhayy Před 7 lety +37

      theaboutroundand that happened to fry in futurama except he didnt wait that long lol

    • @group2gaming
      @group2gaming Před 7 lety +67

      just imagine the US debt

    • @jakethespaceman9896
      @jakethespaceman9896 Před 7 lety +5

      its like 10^10^90 according to Wolfram Alpha

    • @Broockle
      @Broockle Před 7 lety +63

      Chances are the currency you used will completely deflate as it has been rendered worthless by the introduction of new currency printed by the Diddy Kong Dynasty after the 32 usurpation of the man kind by an alien nation.
      Then a few billion alien take overs later all sentient life was extinguished by the natural decay of the universe and you finally arrive in the year 10^92 in your time machine to find the protons and neutrons that formed your bank have completely decayed and are impossible to reassemble.
      Sad to say your plan needs tweaking.

    • @INMATE2468
      @INMATE2468 Před 7 lety +17

      Josias Alexis he was joking about the joke

  • @illiteratethug3305
    @illiteratethug3305 Před 4 lety +133

    This makes me nostalgic for a simpler time when I would watch a documentary on the Heat Death of the Universe for my hit of bleak, morose existentialism, as opposed to now, when I just watch the News

    • @landovcomedy
      @landovcomedy Před 4 lety +9

      illiterate thug , damn this comment age horribly huh :/

  • @winterspectre
    @winterspectre Před 4 lety +198

    This makes me feel oddly. at peace with the universe. The eventual end of everything is comforting.

    • @blockhead134
      @blockhead134 Před 4 lety +23

      I wouldnt say "comforting" personally. Its another reason that life is just pointless struggle and pain.

  • @ElenaSemanova
    @ElenaSemanova Před 7 lety +287

    I absolutely and utterily adore his positivity and passion.
    It's just really beautiful to see someone doing what they really love to do in their life.

    • @eastofeden9487
      @eastofeden9487 Před 6 lety +1

      Yeah I wish he would tone down the affect a little tho

  • @obiejetochukwu8145
    @obiejetochukwu8145 Před 8 lety +2228

    This dude just explained scientific notation in 15 seconds better than all my middle school teachers put together

    • @DuckrollProductions
      @DuckrollProductions Před 7 lety +149

      Here let me explain it even faster
      10^x is a 1 with x 0's after it
      10^42 is a 1 with 42 0's

    • @elijahpedroza9347
      @elijahpedroza9347 Před 7 lety +57

      It's not that hard to understand 😂😂😂

    • @rumbledowndesigns
      @rumbledowndesigns Před 6 lety +24

      predacon95 shame on you for being ignorant. Ever consider that his teacher was just really bad at his/her job?

    • @jaybabcock9123
      @jaybabcock9123 Před 6 lety +1

      OBIEJE TOCHUKWU same

    • @ColinJMonge
      @ColinJMonge Před 6 lety

      OBIEJE TOCHUKWU same bro

  • @garrtrigger
    @garrtrigger Před 5 lety +32

    The repeating cycle of big bang is easier to take in, it gave me a sense of relief.

  • @haydenblankenship9760
    @haydenblankenship9760 Před 5 lety +68

    Mr.Phil, I just want to thank you for your passion of sharing your knowledge on the amazing universe that we live in. With this video I have watched the entire Astronomy course and must say that is has been a joy to be exploring the known and unknown with you these past few weeks. You have given me a desire to watch and study the night sky myself and to share that breath-taking experience with my friends and family. Thanks to you again, and everyone at crash course for this great series.

  • @DavidPhilipNorris
    @DavidPhilipNorris Před 8 lety +209

    This brings to mind Isaac Asimov's short story, "The Last Question," about an artifical intelligence that endures long after the heat death of the universe, continually collecting data until there is no more data and no one to report to, culminating in the last line of the story when it ultimately declares "LET THERE BE LIGHT," bringing about the rebirth of the universe. It's a beautiful and hopeful piece of science fiction.

    • @frankschneider6156
      @frankschneider6156 Před 8 lety +4

      +David Philip Norris
      Excellent story, love it.

    • @TheVanillaChapstick
      @TheVanillaChapstick Před 8 lety +13

      +David Philip Norris Damn, now you've ruined it for me.

    • @DavidPhilipNorris
      @DavidPhilipNorris Před 8 lety +4

      Don't worry, the actual story is much better than my summary.

    • @StevenEveral
      @StevenEveral Před 8 lety +2

      +David Philip Norris The whole of the story is still really awesome, even if you already know the ending.

    • @cuckoophendula8211
      @cuckoophendula8211 Před 8 lety +4

      Oh my gosh, I'm unaware of such a story and even after just reading 2 lines of your summary I was thinking...does this AI become GOD???

  • @SinisterSi718113
    @SinisterSi718113 Před 7 lety +810

    who else loves existential crises

    • @terry2788
      @terry2788 Před 7 lety +22

      Simon F. I do! I even spent an entire night thinking about it and not going to sleep :D

    • @rileyodoherty8535
      @rileyodoherty8535 Před 6 lety +10

      *Nihilistic crises

    • @NumeMoon
      @NumeMoon Před 6 lety +13

      It's not a crisis if you still love it.

    • @yeahoh2222
      @yeahoh2222 Před 6 lety +1

      faalkaa meee

    • @BeanSprouts02
      @BeanSprouts02 Před 6 lety +1

      IS DIANA YOUR PROFILE PICTURE GIRL?

  • @jessykaros
    @jessykaros Před 6 lety +28

    thank you for teaching me about space and time without making me depressed at the end. Not very many people can do that. Subscribed.

  • @thevoidlookspretty7079
    @thevoidlookspretty7079 Před 4 lety +38

    This all just made me think:
    “That is not dead which can forever lie, and with strange aeons, even death may die.”

  • @EugeneKhutoryansky
    @EugeneKhutoryansky Před 8 lety +85

    Enjoy the Universe while it lasts.

    • @bikingdervish
      @bikingdervish Před 6 lety +13

      Enjoy this century, because most likely you won’t live past it.

  • @tomlukin7030
    @tomlukin7030 Před 7 lety +121

    *reinstalling universal system 32*
    >rebooting physics<
    >Creating matter<
    >___________<
    >Reboot complete

  • @novamg9507
    @novamg9507 Před 5 lety +78

    First positive take on Vaccuum Decay that I’ve heard.

    • @Axodus
      @Axodus Před 4 lety +4

      Yeah, he forgot to mention that Vacuum Decay can occur even in our own time.

  • @pantbd
    @pantbd Před 4 lety +27

    "Different, It'll look really different" - The most literal phrase in the whole video

  • @MagnaOmerta
    @MagnaOmerta Před 7 lety +821

    My nihilism's back.

  • @NickiRusin
    @NickiRusin Před 8 lety +132

    This makes me incredibly distressed. It's relatively easy to accept that my existence will end at some point, I can cope with the existence of humanity ending, but the perishing of existence itself - that's the line for me. It just makes humans seem so meaningless.

    • @may5802
      @may5802 Před 8 lety +55

      +Nick Nirus We are meaningless. Humans can do amazing things, we build, develop and learn all kinds of things, but in the end it doesn't really matter. I do understand that this is kinda harsh and hopeless, but we as a species are part of life. Even life itself might be useless in the end, but that doesn't make it less mind-blowingly wonderful. We exist and we get to be part of something bigger. Isn't that all we could ever hope for?

    • @rooksed
      @rooksed Před 8 lety +1

      if you really believe that then you might be as naive as the scientist themselves... they cant even explain how the big bang occurred, how are they going to explain the end of the universe?

    • @whiteflagstoo
      @whiteflagstoo Před 8 lety +2

      +Nick Nirus I don't think of it as existence being purged. More like, no more changes. Whatever is left in the dark era - really basic particles - will still be there.

    • @cherrypickers404
      @cherrypickers404 Před 8 lety +12

      +Rook Benavides Logical inferences. That's not to say that they're actually right, though you speak of them as if they're shooting in the dark with ear plugs and blind folds on.

    • @NickiRusin
      @NickiRusin Před 8 lety

      Annemay Schaap That is really harsh, but you're right. It's probably this meaninglessness that makes me so sad.

  • @ltdan215285
    @ltdan215285 Před 4 lety +132

    "so low energy, it might as well not exist." talking bout me??

  • @liangliangxu7061
    @liangliangxu7061 Před 4 lety +73

    "The Big RIP" will literally be the big rip.

  • @X-3K
    @X-3K Před 8 lety +523

    I feel that us talking about the end of the universe suggests the end of Crash Course Astronomy in the near future :'(
    Oh well, time to make way for Crash Course Physics!

    • @HireDeLune
      @HireDeLune Před 8 lety +29

      +Sebastian Carrier "As we approach the end of Crash Course Astronomy" noooooooooooooo

    • @pyonpyon9394
      @pyonpyon9394 Před 8 lety +13

      yesss pleaseeee cc physics would be amazing

    • @toddgreener
      @toddgreener Před 8 lety +14

      +Sebastian Carrier Have you checked out PBS Space Time? If you like this show you'll probably love that.

    • @westafricangooner9819
      @westafricangooner9819 Před 8 lety +2

      Check out +physics videos by Eugene khutoryansky

    • @tron-8140
      @tron-8140 Před 8 lety

      +Sebastian Carrier Nnnnnnnooooooooooooooooooo *dies*

  • @falnica
    @falnica Před 8 lety +486

    "All of this has happened before and will happen again" you Cylon

    • @crashcourse
      @crashcourse  Před 8 lety +75

      +Fernando Franco Félix YOU'LL NEVER KNOW FOR SURE!
      -Nicole

    • @paillettecnc
      @paillettecnc Před 8 lety +5

      +Fernando Franco Félix It's actually something colonial, quoted from their scriptures.

    • @philferrara5990
      @philferrara5990 Před 8 lety +6

      +Fernando Franco Félix That made me grin. Love BSG.

    • @DeadpoolAndFriends
      @DeadpoolAndFriends Před 8 lety +4

      +Fernando Franco Félix Frakin' Toasters!

    • @badastronomy
      @badastronomy Před 8 lety +19

      +Fernando Franco Félix So say we all.

  • @MadTimmy
    @MadTimmy Před 4 lety +29

    If we survive until the heat death of the universe, we’ll be so technologically advanced that we’ll probably just create a new universe. With black jack and hookers.

  • @ashleycantrell9844
    @ashleycantrell9844 Před 5 lety +120

    *time keeps on slippin, slippin, slippin, into the future~...fly like an eagle...*

    • @brianjardine9184
      @brianjardine9184 Před 4 lety +3

      I noticed that and heard that song immediately now I'm about to watch Space Jam

    • @smooblox69420
      @smooblox69420 Před 4 lety

      Home sales for people that have to sell her on foreclosures that’s when

    • @williammorton8555
      @williammorton8555 Před 4 lety +2

      Dout doooo doo dout

  • @AjourChannel
    @AjourChannel Před 7 lety +70

    "One day, the Flames will fade and only darkness will remain. Even now… there are only embers -
    and man sees not light, but only endless Nights."

  • @s.n2445
    @s.n2445 Před 7 lety +49

    Science never, I repeat, NEVER, fails to amaze me. Mind=Blown

  • @colmhain
    @colmhain Před 5 lety +30

    "I wanna fly like an eagle, to the sea. Fly like an eagle, let my spirit carry me."

  • @neomonk5668
    @neomonk5668 Před 5 lety +36

    So you’re saying I’ve got some time to finish my projects.

  • @kennethmitchell1960
    @kennethmitchell1960 Před 7 lety +166

    dark times ahead, folks

    • @jmitterii2
      @jmitterii2 Před 7 lety +20

      Good news everybody!
      You won't notice any of it, you'll be dead.

    • @thehorseformerlywithoutana2522
      @thehorseformerlywithoutana2522 Před 6 lety +5

      Just light a candle. Problem solved.

    • @MildWilliam
      @MildWilliam Před 6 lety +1

      Quite far ahead, fortunately.

    • @anuragkolla8295
      @anuragkolla8295 Před 6 lety

      Kenneth Mitchell I did not have to do this app for my kids to play with my friends on my way and out and the game other day I was going

    • @alaaye5237
      @alaaye5237 Před 4 lety

      Don’t worry, we’ll all be dead by the time it happens.

  • @enderstar5017
    @enderstar5017 Před 7 lety +133

    *Me watching this video with subtitles*
    "In 1040 or so years from now, even degenerate stars will be gone."
    Me: WAIT, WHAAAAAAAAAAAAAAAAAAT?!?!?!?!?!?
    (Realizes that he's talking about 10 to the 40th power, not 1,040)
    ...oh

    • @bbbabrock
      @bbbabrock Před 7 lety +6

      EnderStar501 Those two aren't quite the same thing.

    • @ScareSans
      @ScareSans Před 5 lety +1

      @Paul Babcock that's what they're saying...

  • @zachthom2998
    @zachthom2998 Před 5 lety +30

    It's always nice to hear a human warp up a talk about deep time with a positive message. Keep going guys we're all in this together!

  • @brandonmtb3767
    @brandonmtb3767 Před 4 lety +83

    Then we find out our universe is just a particle in a giant megaverse

    • @Kleaz80
      @Kleaz80 Před 4 lety +10

      PinHead Larry If my brain wasn’t fried before this comment, it definitely is now!

    • @niko-ni6ps
      @niko-ni6ps Před 4 lety +5

      @Something Mildly Homophobic me too. I love to read and watch kaku and several other scientist talk about multiverse and string theory

  • @guyclykos
    @guyclykos Před 8 lety +458

    Has anyone here heard about the theory that the universe is just one giant computer simulation? The end of the universe may come when it's forced to update to Windows 10.

    • @jayjung5234
      @jayjung5234 Před 8 lety +11

      lol

    • @seriousbutfunny2
      @seriousbutfunny2 Před 7 lety +3

      Haha!

    • @nickolasbrown3342
      @nickolasbrown3342 Před 7 lety +15

      Assuming intelligent civilization has the capacity to live far into the future with technology continuing to progress, AND has a willingness to create an "ancestor simulation", it is statistically more likely that we live in a simulation, than live in reality.

    • @rumbledowndesigns
      @rumbledowndesigns Před 6 lety +3

      Nickolas Brown your argument is flawed. At present day, we have the power to run a relatively small scale simulation such as the one supported in the theory, just with lesser variables. What's to say the people in those simulation don't have "feelings" either? Maybe we ourselves are part of a sim created by a higher level society. Saying it is statistically improbable is redundant because if it is true, then what "statistically improbable" means is futile to define.

    • @NumeMoon
      @NumeMoon Před 6 lety +1

      Technically I think that would be just a regular upgrade, so no information lost.

  • @LordTetsuoShima
    @LordTetsuoShima Před 7 lety +90

    9:46 subatomic particles, photons, and Jeb Bush*

  • @isbestlizard
    @isbestlizard Před 4 lety +31

    I want to have my mind uploaded and ejected out of the galaxy and woken up every few thousand years for a tiny increment of time so I can watch the Milky Way and Andromeda merge 💚 that'll be a sweet sight for a clone of me to see!

  • @carsonblake107
    @carsonblake107 Před 4 lety +5

    I like how the subject matter here is so Grimm, that vacuum decay is a happy thing.

  • @Neceros
    @Neceros Před 8 lety +91

    I don't understand why people internalize the end of the universe. I've seen people do it and get very depressed. We will be long dead before then, and what's more, most likely something else will happen. We will learn new rules we didn't understand, or something about the universe may change merely by process of time and observation.
    We simply don't know, and none of us will ever see it.

    • @magicguycouldbe
      @magicguycouldbe Před 8 lety +10

      +Neceros The reason people freak out is bc nihilism

    • @NickiRusin
      @NickiRusin Před 8 lety +6

      +Neceros I internalize it every time it comes up, which in my case is really often, since I love astronomy and learning about it a lot. I don't really know why I'm doing it, since it is really the most depressing thing imaginable. It may or may not have changed me as a person, actually.

    • @rezza6
      @rezza6 Před 8 lety +12

      +Nick Nirus You don't find the fact your life will be ending within this century more depressing? Compared to you, the universe gets it pretty good I'd say.

    • @NickiRusin
      @NickiRusin Před 8 lety +7

      rezza6 Hey, that's not necessarily true. I may live to see cybernetic organs and even human-to-machine transplantation, but that's not the point. I might get to do something meaningful in my lifespan, but ultimately the greatest of deeds will be lost to time. I guess that's what makes me so sad.

    • @TheLoneBit
      @TheLoneBit Před 8 lety +5

      +Neceros
      Unlike everyone else (and this could be due to my lack of knowledge in the subject) have a hope that there is some why that we don't know about yet to escape the death of the universe. Maybe we can find a new home.. maybe we can make a new home.. maybe we can break the rules and keep our atoms from decaying..
      We don't know yet..
      Death, to me, is pointless. And I can not accept death.. I can not accept pointlessness. Everyone else has already accepted it though.. which is kind of sad to me.. so "life itself" as it is now, is my trigger.

  • @yomammasaurusrex9571
    @yomammasaurusrex9571 Před 8 lety +29

    So.... if space is expanding like you said in a previous episode, can time be expanding in that same exact way? We just perceive it as time passing?

    • @marzk4234
      @marzk4234 Před 8 lety +18

      You just blew my mind

    • @davidkim4653
      @davidkim4653 Před 8 lety +5

      +Yomammasaurus Rex You can't exactly call it expanding because time is relative. Time is not going at the same rate for one observer compared to another observer in a different frame of reference. So you really can't make a comparison on how time is "expanding" for all observers in the universe.
      When two observers are moving relative to each other, they are in different frames of reference. And all of the universe is moving relative to something.

    • @PajamaMan44
      @PajamaMan44 Před 8 lety

      +David Kim But isn't the expansion of space also relative? Depending on how far you are from something else, space is expanding faster or slower, much like how time moves faster or slower depending on how fast something it moving relative to you.
      Nonetheless, it is pretty obvious our universe simply resides in the event horizon of some 4-dimensional black hole

    • @t3st1221
      @t3st1221 Před 8 lety

      +Yomammasaurus Rex Time is only experienced if you have mass. A photon being massless is literally frozen in time and from it's point of view its life last 0s. So by the dark era, when there is only light left, time is a meaningless concept as there is nothing to experience it.

    • @Demogarose
      @Demogarose Před 8 lety

      +Yomammasaurus Rex No, because Time isn't actually a real thing. "time" as we call it is an expression of our perception of change. When we talk about time, what we are really talking about is the changes in the universe around us that have occurred.

  • @b.lonewolf417
    @b.lonewolf417 Před 5 lety +81

    "Eat more tacos and burritos, so we can have more gas for star formation. (This video has been sponsored by Taco Bell...)"

  • @am.is.aesthetic.7870
    @am.is.aesthetic.7870 Před 5 lety +4

    Lately I've been watching these videos when I get bored but this just scares me but also makes me relieved that they're might be hope for a new universe.

  • @MrGregory777
    @MrGregory777 Před 8 lety +31

    Will the Toclafane be there?

    • @garethdean6382
      @garethdean6382 Před 8 lety +9

      +MrGbere777 They die out after a few trillion trillion years. After that we enter the Blue Box era.

    • @AlDuke14
      @AlDuke14 Před 8 lety

      But the Queen of the United Kingdom will still be around

  • @devling6606
    @devling6606 Před 7 lety +10

    “The Wheel of Time turns, and Ages come and pass, leaving memories that become legend. Legend fades to myth, and even myth is long forgotten when the Age that gave it birth comes again.”

    • @jari2018
      @jari2018 Před 6 lety

      Quoting Robert Jordan. Anyway Ian Banks Hydrogen Sonata is more true than this video. Civilations sublime when they mature so maybe we have a century before the event or less.

  • @MultiTrollNation
    @MultiTrollNation Před 5 lety +13

    The Restaurant At The End of The Universe. A Hitchhiker’s Guide To The Galaxy reference. Immediate respect and immediate like 🤟🏻👍🏻

  • @Fermion.
    @Fermion. Před 4 lety +12

    So a team of physicists figured out when my wife will finally be done getting ready. The Dark Era. Gotcha.

    • @absolutelysobeast
      @absolutelysobeast Před 4 lety +2

      Fermion ha! Got eeeem!! But also you should consider yourself lucky that your wife takes so much time to try to look her best for you! Just play some video games while you wait that way when it comes up, you can tell her that you hate waiting for her as much as she hates you playing video games, problem solved!

  • @traxhoho
    @traxhoho Před 8 lety +89

    Just yesterday i was losing sleep by thinking about the end of the universe :I

  • @adamoleeee
    @adamoleeee Před 8 lety +4

    Phil, Thank you so much, I read this book in 2000 and lost my copy, I have been struggling to recall the title for many many years. cannot express my gratitude enough. one of the most elegant and rewarding books of its type.

  • @brandong.1857
    @brandong.1857 Před 4 lety +1

    Thanks for making this subject accessible and easy to understand. Fascinating

  • @trololling
    @trololling Před 4 lety +51

    Wow, I just misread the title as Crash Course: Anatomy. Imagine my confusion when the dude just kept on talking about the universe 🤦🏻‍♀️

  • @O_Ryodan
    @O_Ryodan Před 8 lety +6

    There is no words to express how much i like this channel!!!

  • @AnhLe-zl4ws
    @AnhLe-zl4ws Před 8 lety +78

    well by the time any of this happens, humans will be gone.
    It seems so bleak in the "future" but if I think about it, as a human, it is difficult to even comprehend infinity itself because I have a finite lifespan. The universe restarting over and over in a cycle sounds plausible and if the laws of physics get rewritten, who knows what will happen?

    • @MrZvastica
      @MrZvastica Před 8 lety +11

      +Anh Le No, the universe restarting over and over in a cycle sounds like religion. Where from fear of ending people create scenarios filled with hope.

    • @writershard5065
      @writershard5065 Před 8 lety +1

      +Anh Le Well we could either be gone, or we could have further evolved into something else, and grown our civilization to the point of which we have empire across galaxies.

    • @DragoniteSpam
      @DragoniteSpam Před 8 lety +5

      +MrZvastica You could either call it that, or something more like a weird science fiction setting. Which are a bit more fun to think about imo.

    • @cpob2013
      @cpob2013 Před 8 lety +1

      +MrZvastica well, it might. some other universe might bump into ours or something. black holes are still a mystery and other warping effects. infinity is a long time. lots of time for unknown possibilities to have a chance. but does it really even matter? once stars all go out, certainly when brown dwarfs go out, were toast.

    • @Andytlp
      @Andytlp Před 8 lety +5

      +MrZvastica religion is dumb but universe that only happens once sounds ridiculous.

  • @Allenryan819
    @Allenryan819 Před 4 lety +2

    Nothing last forever!

  • @therealpunitdh
    @therealpunitdh Před 6 lety +2

    Love your videos man. Please keep them coming!

  • @EdWalzak
    @EdWalzak Před 8 lety +5

    Killer Steve Miller reference! Please don't end, this series has been amazing.

  • @no-ge9gd
    @no-ge9gd Před 8 lety +6

    yessss my adiction continues

  • @monideepabhowmick5879
    @monideepabhowmick5879 Před 5 lety

    Great job in making me understand such profound ideas in such a simple manner.

  • @justbreathe7816
    @justbreathe7816 Před 5 lety +2

    I just love the Hitch Hikers Guide to the Galaxy reference.

  • @roninmediaoutlet
    @roninmediaoutlet Před 8 lety +3

    Hey there, I've watched huge portions of your courses and the World History and Astronomy are my favorites by far. Just wanted to say I think what you guys are doing is revolutionary, and I'm really glad PBS picked you up. You and Mr Green both remind me of the few good teachers had over the years - the ones who inspired. Keep up the amazing work; you are reaching an audience the size of which is unreal and making learning fun again.

  • @FireShell7
    @FireShell7 Před 7 lety +37

    This just makes me feel nihilistic - I'm gonna live for a little over 100 years at maximum...

    • @96ace96
      @96ace96 Před 7 lety +18

      Otherized Meme Ahh... don't give up hope just yet. I'm gunning for 20 000+. At least. Let's meet each other at Alpha Centauri 900 uears from now, yeah?

    • @jmitterii2
      @jmitterii2 Před 7 lety +1

      96ace96, now that's just delusional.

    • @AB-ee5tb
      @AB-ee5tb Před 6 lety +7

      Otherized Meme
      you won't live till 100 bud

    • @ThorHC11
      @ThorHC11 Před 4 lety +1

      @@jmitterii2 It's not delusional, it's a JOKE.

  • @IKill1FeeDZz
    @IKill1FeeDZz Před 5 lety +3

    So when he mentions a cosmic reboot, that’s basically another Big Bang

  • @mdtalhaansari1096
    @mdtalhaansari1096 Před 5 lety

    I love the recap part. Maybe the only show on CZcams to recap the important points in the end. Thanks

  • @nutmaster652
    @nutmaster652 Před 7 lety +15

    "I'm going to use numbers bigger than any other numbers you've come across before"
    Fuckin bring it scrub, Sharkee prepared me for this. Show me Graham's # noob.

    • @brendanotoole5871
      @brendanotoole5871 Před 7 lety

      Hyper iterations for days

    • @dumpsockpuppet5619
      @dumpsockpuppet5619 Před 7 lety +3

      Tommy Klein pfff i just came from a Vsauce video, i think i can conceptualize some damn big numbers

    • @Dunkair
      @Dunkair Před 7 lety +1

      Easy. For any number you choose, I will choose that number + 1. Thus, my number will be bigger than any you can conceptualize.

  • @dorianhemming8339
    @dorianhemming8339 Před 8 lety +3

    ugh, I'm really going to miss this crash course

  • @sagnikmaity1444
    @sagnikmaity1444 Před 5 lety

    I like how you find hope in the darkest time ever... You are so positive sir

  • @williamrichardpabstcathey3644

    Thank you. Very enlightening!

  • @MpowerdAPE
    @MpowerdAPE Před 8 lety +54

    Call me a degenerate but, I loved this.

    • @garethdean6382
      @garethdean6382 Před 8 lety +12

      +MpowerdAPE That's dark man.

    • @classactionsteve
      @classactionsteve Před 8 lety +9

      +Gareth Dean that's stelliferous, stupid!

    • @garethdean6382
      @garethdean6382 Před 8 lety +13

      Steven Levine
      I'm not stupid, just low mass.

    • @RT-oy7mu
      @RT-oy7mu Před 8 lety +2

      To me this is freaky awesome.

    • @jasonburge
      @jasonburge Před 8 lety +3

      Hey you are not a degenerate! you are stelliferous!

  • @thomassophocles6757
    @thomassophocles6757 Před 7 lety +37

    Will the subatomic particles b as "low energy" as Jeb?

    • @JaySkottTV
      @JaySkottTV Před 5 lety +1

      big tutubi Damn, 3edgy5me over here with the super sick burn on a comment from 2 years ago.

  • @jimmyshrimbe9361
    @jimmyshrimbe9361 Před 5 lety

    This show is amazing!

  • @vexacron
    @vexacron Před 5 lety +1

    This show is so awesome.

  • @BetaFett
    @BetaFett Před 7 lety +10

    This is my favourite crash course. More than physics, more, even, than gaming. :)

  • @NefosG
    @NefosG Před 7 lety +8

    Funny thing about exponentials is, let's say after 10^90 years, if you wonder about the living beings of that time that could be living by harvesting energy from black holes and think that they're living so close to the death of the Universe, if the super massive black holes are really going to run till 10^92 years, leading to the impossibility of life by the lack of energy, that means the Universe is still 1/100 of the way there. It's like saying a 1 year old baby is so close to his estimated death of about 100 years. Just to show how absurdly big that number is.

  • @EasyExplained
    @EasyExplained Před 5 lety +2

    man, you are one of the best explainers ever!

  • @Teo117
    @Teo117 Před rokem +1

    Super interesting!! Thank you 😁

  • @ajaykumarsingh702
    @ajaykumarsingh702 Před 7 lety +3

    This video is amazing and very educational for beginners.

  • @DuranmanX
    @DuranmanX Před 8 lety +3

    I'm glad to be living in this time

  • @ideath173
    @ideath173 Před 5 lety

    mind melting. Soul crushing.

  • @danchisholm1
    @danchisholm1 Před 6 lety

    Awesome. Such a fun video. Ty guys.

  • @garethdean6382
    @garethdean6382 Před 8 lety +4

    Phil: There's a light at the end of the tunnel...
    Phil: ...and it's an oncoming train.

  • @EveryNightAtNine
    @EveryNightAtNine Před 8 lety +15

    Time keeps on slipin...slipin...slipin...into the future. I want to fly like an eagle...

    • @REDPotriats757
      @REDPotriats757 Před 5 lety

      Adam Lang 😅

    • @sup2069
      @sup2069 Před 5 lety

      That song popped into my head when he said that too! 😆

  • @zhenghaorocks
    @zhenghaorocks Před 5 lety

    Great series!

  • @flume9966
    @flume9966 Před 6 lety

    love your videos. so much infomation 🤗

  • @whoaminow100
    @whoaminow100 Před 7 lety +12

    i think i'll contain my worries to things that will likely happen in the next 10,000,000,000 years and not so far in the future as to be ridiculous.

  • @ethanwild3301
    @ethanwild3301 Před 7 lety +8

    Time keeps slipping into the future 💯

  • @edt5615
    @edt5615 Před 5 lety

    Excellent teacher, very engaging

  • @Danielhuren
    @Danielhuren Před 5 lety +22

    ill tell you whats soul crushing knowing that non-existence is inevitable and that everything you ever do means nothing in the grand scheme of the universe

    • @cjdonohue2256
      @cjdonohue2256 Před 4 lety

      @EPLURiBusUNUM Yea!

    • @brianhays3704
      @brianhays3704 Před 4 lety

      Not true if you are a Christian.

    • @InanisNihil
      @InanisNihil Před 4 lety

      @@brianhays3704 still true.. only difference is SELF DELUSION... sorry not sorry..
      being dumb death and blind doesnt change the reality of sound light and what ever the opposite of dumb is in a physical sense not relating to the human brain.. i guess "laws" 🤷‍♀️

    • @brianhays3704
      @brianhays3704 Před 4 lety

      @mrjo2thec I'm just addressing the "non-existing is inevitable" part. I'm saying that we believe in heaven. No need to get too harsh! :) I can tell you more if you are curious.

    • @brianhays3704
      @brianhays3704 Před 4 lety

      @@InanisNihil I guess yeah laws is the right word or theories yeah, you're right 🤔. With the limited knowledge we have now and the lack of uniformity between micro and macro physics.. we're projecting that physically the world will be doomed.
      That may be right, but I was just saying that Christian's believe in heaven which will last for eternity.

  • @JoelCarli
    @JoelCarli Před 7 lety +146

    I believe Carl Sagan said that Hinduism is the closest a major religion gets to modern cosmology due to the time scale of a Brahma day (that is, one day from the creator deity's pov) being equal to the projected time scale of the universe's existence. Hindus believe in cyclical time, meaning that the universe is constantly being destroyed and recreated, which seems to fall in line with the theory posited at the end of this video about a universal reboot. Interesting stuff.

    • @aishanipal8109
      @aishanipal8109 Před 7 lety +19

      John Baterino and this is your concept (:

    • @LightswrathUltimatum
      @LightswrathUltimatum Před 6 lety +5

      Religion succs.

    • @lunaticfae4415
      @lunaticfae4415 Před 6 lety +2

      John Baterino lmao, you see what you did here right?

    • @nm9864
      @nm9864 Před 6 lety +2

      Omg ... Please do not bring blind religion in here.

    • @eshwar2496
      @eshwar2496 Před 6 lety +5

      I am a Hindu and I believe what God and Vedas say and the concept is true according to carl sagan but not according to Vedas. Nobody knows what is in the Vedas. We can also reveal the grandest mysteries of Jupiter, or say for example whether the aliens exist or not or lot of other hard astronomical questions, but none, none in the universe can say what is in the Vedas. I request you to not to believe such kind of things. I too believed in such things. My mom said to stop to believe such things because of they may be fake. But when I came to know about the real astronomy, I immediately stopped believing what the fake stuff all are talking about. Of course, one Brahma day is equal to the life cycle of our universe. But other things like the avatar (incarnation, or rebirth of the same soul) of Kalki will take place at the end of Kali-yuga. They may be true, but it is said that Kalki will be born to Vishnuyasha and sumati which are all fake because nobody knows who, to which they should be born, which is fake.

  • @TimD.Morand
    @TimD.Morand Před 7 lety +3

    "Fly Like An Eagle" from Steve Miller Band. Well placed reference!

  • @rparmar70
    @rparmar70 Před 4 lety +1

    What a hopeful video.

  • @cococesar209
    @cococesar209 Před 6 lety

    Very well researched And edited video thumbs up

  • @DonSolaris
    @DonSolaris Před 7 lety +332

    Cool. So that means i've watched this video infinite number of times. (and i still don't understand it)

    • @pauldickhoff3594
      @pauldickhoff3594 Před 7 lety +28

      There is a theory which states that if ever anyone
      discovers exactly what the Universe is for and why it is here, it will
      instantly disappear and be replaced by something even more bizarre and
      inexplicable.
      There is another theory which states that this has already happened.”

    • @jemraiomawe2169
      @jemraiomawe2169 Před 7 lety +3

      There's also a theory which states this has already happened.

    • @tiborsaas
      @tiborsaas Před 7 lety +9

      That's not a threory. Look at Trump.

    • @MrGearySr
      @MrGearySr Před 7 lety

      So did I. But if you watch it one more time, then you will understand.

    • @nunanuna9084
      @nunanuna9084 Před 7 lety +6

      You are rewritten each time you see it, so don't worry about your mental capacities; it is as if this was your first time. :)

  • @jamesphillips5053
    @jamesphillips5053 Před 7 lety +124

    Well now I'm depressed

    • @Jjunior130
      @Jjunior130 Před 7 lety +6

      why?

    • @DominatorBuilder
      @DominatorBuilder Před 7 lety

      dark age

    • @Johntub3
      @Johntub3 Před 6 lety +10

      you can try to laugh the absurdity of existence off
      but you need to laugh really hard and really long :D

    • @In_TheMoonlight
      @In_TheMoonlight Před 6 lety

      eh, already was before this video

    • @bikingdervish
      @bikingdervish Před 6 lety +3

      Get over yourself. You’re mortal. You will die this century, don’t act like any information in this video actually affects you.

  • @billc.4584
    @billc.4584 Před 6 lety

    Very enjoyable episode.

  • @Galistarwater
    @Galistarwater Před 6 lety +2

    Wow...and I thought the immense size of the visible universe was overwhelming. But this...wow! You completely blew my mind! :D Awesome video, by the way! Thank you!

  • @raydenstriver5451
    @raydenstriver5451 Před 8 lety +15

    i think the description is wrong, it says "black holes will evaporate after 1092 years"

    • @crashcourse
      @crashcourse  Před 8 lety +28

      +Rayden “Jay” Striver Yeah, that was meant to be 10^92 years! It's fixed now!
      -Nicole

    • @bt4670
      @bt4670 Před 8 lety +1

      +Cycling in Edmonton from the Eyes of a Teen Here's your no-prize

    • @NoahTopper
      @NoahTopper Před 8 lety +1

      +CrashCourse Eh, sounds close enough.

    • @wolfumz
      @wolfumz Před 8 lety +1

      +Cycling in Edmonton from the Eyes of a Teen it's only a difference of 92 zeroes

    • @marcperez2598
      @marcperez2598 Před 8 lety

      10 up 92 means 10 to the 92nd power

  • @Starbuck8008
    @Starbuck8008 Před 7 lety +60

    This is depressing

    • @nicolacalabrese7353
      @nicolacalabrese7353 Před 7 lety +7

      take a ride through a redlight district giving all the hookers who make eye contact with you the nod signaling you want to pay them patronage but then drive off as soon as they start to walk over and look back at their reaction in your rear view if you want real depression

    • @robertwilsoniii2048
      @robertwilsoniii2048 Před 7 lety

      But if there are any people alive when it begins, ouch.

    • @GhostInTheShell29
      @GhostInTheShell29 Před 7 lety

      jmitterii2 For those that believe in reincarnation, we will still be around as long as life can exist.
      Though there is some issue with the definition of self, since humans do seem to define themselves mostly by their memories and you don't keep those when you reincarnate.

    • @JackHumphrey
      @JackHumphrey Před 4 lety +1

      Why? Did you have plans?

  • @drdzdd
    @drdzdd Před 5 lety

    Great talk
    Sounds like poetry to my ears

  • @lgbtbathroom5562
    @lgbtbathroom5562 Před 5 lety

    Thank you !