Does Life Need a Multiverse to Exist?


  1. LM Production

    LM ProductionHari Yang lalu

    Another possibility is that the constants aren’t constant, and instead change or are different in different parts of the universe. This would mean if just one section of time or one section of the universe has the conditions for life then life will exist

  2. TheIceThorn

    TheIceThornHari Yang lalu

    life is just the change of universe in time... we're just lifeforms.

  3. cosmos and physical laws

    cosmos and physical laws2 hari yang lalu

  4. Thirst Fast

    Thirst Fast2 hari yang lalu


  5. Jefe Cristo

    Jefe Cristo2 hari yang lalu

    Why do we assume the parameters of the universe could have been anything else? If the universe could only be what it is, there is no need for fine tuning. No need for probability.

  6. Rob Grant

    Rob Grant3 hari yang lalu

    Science Theory Science Facts We should have a LAW making them Declare Theory vs Fact...

  7. Hayden Travis

    Hayden Travis3 hari yang lalu

    You ever notice something for the first time, then notice it everywhere you didn't before? What if that's the universe? We are it noticing itself, and suddenly it's everywhere.

  8. Techno Blast

    Techno Blast3 hari yang lalu


  9. Eduardo Martinez

    Eduardo Martinez3 hari yang lalu

    Does Occamrazor apply here? I mean, a wizard did it seems more simple than multiverse...

  10. Mike Blyth

    Mike Blyth3 hari yang lalu

    Or 4, we just don't understand why the dials are set as they are.

  11. Rob T.V.

    Rob T.V.4 hari yang lalu

    My magic 8ball says different

  12. Raghavendran T B

    Raghavendran T B4 hari yang lalu

    One can create his own Universe with his mind power, if he attains that level with meditation.

  13. Audiotap

    AudiotapHari Yang lalu


  14. Markxxx

    Markxxx4 hari yang lalu

    The reason the universe has the "dials" is not a difficult question. And we are here simply because if the dials were not set as such, we wouldn't be around to question it and the question wouldn't need to be answered. It's a self answering question. It's the same thing as if my mother turned a corner and never met my father, you would not be around to ask that question.

  15. jdub isbest

    jdub isbest4 hari yang lalu

    As a newly-born Feynman and Overly odd fellow, I Hypothesize the Multiverse is a Tree made of Cubes like Minecraft. An Octree to be exact. Also another valid example of Tesla's 3 6 9 enigma. It is multi-dimensional (3). There are (6) Faces at any point, at any scale. There are 9 points, each face has 1 point at it's center and Face Points Always point inwards(6). Where the Face Points converge is the Center of the Multiverse (7th). You need a Target or Destination, this is the 8th point. The (9th) Point is that you need to Understand and look at things from All perspectives. Perspective Changes and infers to each individual a different Center, and meaning to their own objectives. This also infers the Shape of the Universe, and Why it appears Flat. The Universe is a Cube, a Cube of infinite possibility, chance, and improbability that auto-adjusts in size to what is Observable. When we all get on the same Frequency, diversity suffers as everything becomes one and the same. It takes Less Energy or Computations than it seems, as the Universe is Very Efficient. You can still not comprehend, but, so long as you can Understand this, the Multiverse is Full of both Good and Bad Vibrations. Both Good and Bad Vibes are essential, for one cannot exist without the other and maintain equalibrium. I believe this Also explains the movie "The Fountain" with Hugh Jackman to a Masters degree level. Many times we can over-think the simple, and often forget our Razor, leaving scratchy scruffy whiskers of truth wrapped in misunderstanding. Here is where I leave you with the answer to Everything, Life, and The Universe ... It Cannot exist without Love, so be good Stewards and K.I.S.S. it every moment of every day, and we will all Evolve before you know it. (Keep, It, Simple, Seriously) If you need Tongue, find a Partner who is Willing. If you cannot find a Partner or Partners, Hope fades, Lights dim, and we resort to being Clever and re-complicating things all over again. With this I bid you "Au revoir", I'm going back in the water, it's Warm there, not Cold like most people. Though a Garden would also work, for you reap what you sow, and I think this Hem's quite a few thing together in a neat and simple way. Too bad there is no Prize..I'm pretty handsomly Hangry all the time, could have gone Shopping. Well at least I have my (tau + L)! by me, J.T.P. aka Elroi Jenkies and the Mystery Floor, waiting on an Elevator.

  16. jdub isbest

    jdub isbest4 hari yang lalu

    Remember the Lockers in M.I.B. More or less an example, Also Video games use the Octree for positioning and Tracking.

  17. zengalileo

    zengalileo4 hari yang lalu

    Even to say the phrase "fine tuning" is to put the cart before the horse. If a universe had no life we'd be amazed and impressed how fine tuning was just so, so that life doesn't exist. Maybe a universe without life would have something else that's even more impressive than life. Don't put down universes without life. They are universes too.

  18. Calvin Sylveste

    Calvin Sylveste5 hari yang lalu

    This fined tuned stuff is starting to sound a lot like every creationist video out there.

  19. Danilego

    DanilegoHari Yang lalu

    The amount of creationists in these comments is mind blowing! Never expected that in a PBS space time comment section

  20. Audiotap

    Audiotap4 hari yang lalu

    creationists just forget that we only know about this universe because we exist in it

  21. James mason

    James mason5 hari yang lalu

    As with life n death, forrune and misfortune, we are all lucky to be here let alone question or wonder over it. One thing ive noticed is that as intelligent entities even in isolation from books or knowledge sources, even as a child i wondered all these things, without ever being exposed to the big scientific theories, so are we all Boltzman type brains thinking or working on these problems. Is my simulation the same as yours? Whatever this rambling remeber no religion ever teaches gratefulness for just being, it all seems aimed at whats next after this and i want more life. Be grateful for the immense probablities that had to be in place just for u 2 read my words!

  22. Ocean Flyer

    Ocean Flyer6 hari yang lalu

    How can we prove the presence of multiverse? There will be infinite number of them. Just imagine if we change only 1 out 20 free but essential parameters of this universe, namely Planck's constant. Say we arrange a set of universe with Planck's constants spread from 10^100 to 10^-100, say each universe has the tiniest increment of this parameter. That variation set of Planck's constants is already infinite. We haven't talked about the other 19 parameters.

  23. David Kelley

    David Kelley6 hari yang lalu

    Some religious people use fine tuning to justify their particular god(s). Another example of religions trying to use our current ignorance as justification for their unsubstantiated beliefs.

  24. Chris Duston

    Chris Duston6 hari yang lalu

    So if I over-generalize, a goldilocks universe is one where energy dissipates at some ideal rate such that stable structures (matter) exist for long enough windows to develop sentient life. Makes you appreciate the vastness of it all :)

  25. Marco Martinetto

    Marco Martinetto7 hari yang lalu

    Therefore there must be a Multi Multiverse: there must be lots of multiverses, and our universe is in a "luky multiverse" that has constants. Therefore there must be a Multi Multimultiverse for the same reasons, and so on up to a fractal (multi^infinite)verse. This idea is good on so many levels.

  26. ___

    ___8 hari yang lalu

    This will sound morbid but I can't help thinking this way. Even if we are the first intelligent life to exist, someday you and I will die and never know we existed. Further yet, someday all of time/space will cease to exist and none of anything we ever do or did will matter....Makes you wonder what is the purpose of anything? My advise...find something you enjoy doing while you are here.

  27. Barry Deeks

    Barry Deeks8 hari yang lalu

    I don't agree with the parallel universes theory, it attempts to explain the existence of the universe without God. There is only one of me or you, more you than me though, i am very proud of my creation and the people in it. The time has come for me to act, I realise that you will take at least a year to adjust.

  28. TheOneAndOnlySame

    TheOneAndOnlySame10 hari yang lalu

    "Life" is not actually a thing. There's no "life" and "unlife". No, really, there is not.

  29. Csababo Balo

    Csababo Balo10 hari yang lalu

    It looks so perfect becose our knowledge is based on our serounding. Just like the 4e demension is hard to amagion but the 3e is well understood. Our logic is puurly based on logic

  30. María Martínez

    María Martínez10 hari yang lalu

    Ever considered that it isn't the Universe (or universes) the one that is fine-tuned for life, but life the one that constantly fine-tunes itself to adapt to the Universe's conditions, laws, constants, etc? Which could happen samely in whichever universe it might exist, whatever its conditions, laws, constants, etc.? Life is essentially adaptative, and when any form of life can't adapt fast enough, another takes its place. We have seen it and are seeing it now. This hypothesis is like the old Spanish saying: "poner la carreta delante de los bueyes."

  31. Annie

    Annie11 hari yang lalu

    Someone is running a simulation and we are inside of it. Anyone who has ever ran a computer simulation has played with the parameters until they were satisfied with the end results. Our simulated universe is no different...

  32. Makubex Gospel

    Makubex Gospel11 hari yang lalu

    This might be a bit off topic: What if in another universe, time is faster than ours, and u decided to spend some vacation there. Would your body age following that universe's time or ours? Im simply looking for some theory based from facts, its impossible to prove anyway haha

  33. Nemo_K

    Nemo_K12 hari yang lalu

    Wait a minute. This totally fits in with simulation theory. Think about it: If human scientists want to find out how ant colonies grow under specific conditions, how would they do that? Let's say these scientists don't just want to study any colonies out in the wild - no - they want to observe as many possible different growing conditions as they can imagine. So, what is their solution? They literally create ant colonies in a controlled environment. The colonies will live in a glass box large enough to reasonably fit any ant colony well beyond its extinction (death of the universe). So, what properties would the scientists finetune in all these different colonies? Well, one colony would get rainfall every five days, and another colony every six days. One colony would have soil with 50% sand, and another colony 51%. One colony will experience a forest fire once every 621 days, and another colony every 622 days. It's preaty easy for us to think of many different conditions which could affect the growth and survival of the ant colony. Now, replace the glass box with a universe, replace the ant colonies with life in general, and replace the growth conditions with the cosmological constants. The human scientists are alien species, creating big bangs in many different (simulated) universes, each with slightly differently tuned constants, in order to observe which universes create life and which don't.

  34. Guz Man

    Guz Man13 hari yang lalu

    Can we excite the core of geologically inactive planets and thus initiate a terraforming process?

  35. Sebastian Suśniak

    Sebastian Suśniak14 hari yang lalu

    What is "container" for those multiverses? Can one universe interact with other one?

  36. nikke10000

    nikke1000014 hari yang lalu

    I'm not sure how the fact that the universe is suited for life is in anyway an indicator that there is a multiverse. I mean isn't this thing that we call life just a symptom of the universe. We were created by this universe in which we live so of course it suits us. We are this universe. If there is another universe with other laws of physics it's whole concept of what we call life will be completely different and they'll be suited to laws of physics of that universe. I don't see how there is anything special about our universe just because we are in it.

  37. Smerg the Dargon

    Smerg the Dargon15 hari yang lalu

    _Man looking displeased:_ Diproton _Man looking pleased:_ Helium-2

  38. ppoint432

    ppoint43215 hari yang lalu

    Anyone know what song is played at 3:10?

  39. Fan Jerry

    Fan Jerry15 hari yang lalu

    Could be a single universe, but the constants are slowly shifting.

  40. maxesmart

    maxesmart16 hari yang lalu

    Life is like when I started smoking: by then, the cigarette was no harmful, neither life needed another place to be.

  41. Eric White

    Eric White16 hari yang lalu

    @PBS Space Time, 4:40, It actually was inevitable for our universe to be capable of life enabling chemistry or else we wouldn't be here and it wouldn't be our universe.

  42. Juicyblunts

    Juicyblunts17 hari yang lalu

    So you're telling me that everything works the way that it does *because* it works the way that it does. And that by changing the way that something works, it would work differently, or not at all? 🤔

  43. Brianx Wall

    Brianx Wall17 hari yang lalu

    Surely the idea of a finely tuned universe is misleading? This universe may indeed be tuned just right for carbon based life to evolve. So what? If the universe "settings" had been slightly different there would be no life as we know it Jim, but surely with different laws arising from this different universe, life of some other form could arise? Something we wouldn't recofnise as life if we were able to observe it. But nevertheless it would be life in the terms of that universe.

  44. Andrew Colvin

    Andrew Colvin18 hari yang lalu

    Just think, there is a universe where humanity has created a just and equal world, where Bernie Sanders is president, and where prosperity is based on self-determination instead of greed and environmental destruction. Let’s make this a reality in 2020. Vote for Bernie! 💙