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The Universe

Discussion in 'The Lounge' started by Foxy, Mar 12, 2008.

  1. Foxy

    Foxy Super Ninjarator
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    Where does everyone stand on the theories of the universe?

    Myself, I am undecided. Lots of nice ideas such as string theory and relativity....space time 'threads'.

    So the universe 'time, space and gravity' brief definition. Where do you stand on it?

    Looks like Napalm will be having some deja vu.
     
  2. HyPeRsHoCk

    HyPeRsHoCk Future Marine

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    Is this even allowed?
     
  3. surfinrach90

    surfinrach90 I GOT A JAR OF DIRT.

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    I'm so undecided.

    I think about it a lot, and read about it a lot too o.0 I also wish I'd taken something like Philosophy in college. Really intrests me.
     
  4. DBloke

    DBloke The last original
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    Question for openin the debate

    How can the universe be inifnate ?
    When you cant have infinte of some thing real

    Unless it loops we have established that theres a centre of the universe so when we get to the edge will there a infinate loop
     
  5. Foxy

    Foxy Super Ninjarator
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    Explain?
     
  6. HyPeRsHoCk

    HyPeRsHoCk Future Marine

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    For forum rules.
     
  7. DBloke

    DBloke The last original
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    What rule dose it break ?
     
  8. Foxy

    Foxy Super Ninjarator
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    How would a discussion on time and space breach the rules?
     
  9. Napalmbrain

    Napalmbrain WiiChat Member

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    Hey, deja vu... :lol:

    Heavy physics warning:

    I think the Universe is infinitely large, since the current evidence points towards a "flat" universe. For you guys, a flat universe is one in which the rules of Euclidean geometry (the geometry you learn in school, rather than the various types of geometry in general relativity) apply. If it is flat, then the Universe is infinitely large, and the expansion of the Universe is actually the gaps between galaxies getting larger. It's possible the Universe is "closed" (sort of like living on the surface of a balloon) or "open" (similar to a flat universe, but with hyperbolic geometry instead) too. It all depends on the value of the density parameter Ω, which is thought to be close to or exactly 1.

    Then there's the question of what's going to happen to the Universe in the future. Some suggest a Big Crunch where it shrinks back into a singularity, but it would seem this is not the case. The Universe is not only expanding, but that expansion is accelerating, caused by the mysterious and as as-yet-unexplained dark energy. Presumably this means it will expand forever and eventually reach a point of "heat death" where the entropy of the Universe reaches a maximum and there is no longer any energy that is available to be put to use (there would still be the same amount of energy as there is now, but it would all be "useless" energy).

    Cosmology lesson over.

    We can talk about what our favourite gun is, but not the nature of space and time? :confused:
     
  10. DBloke

    DBloke The last original
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    It whould be nice to see what happens at the end
    But with galaxys getin futher away looks like we will have to develop some fast way to get there
    But if theres a black hole in the middle of every gallaxy slowly suckin (huh huh I said suckin) every thing towards it some time the the very distant fucher wont all the gallaxy just be a vast eptmyness
    Oh great
    That means if we dont all kill each other first will there be humans (or what ever wii evolve into) left
    Will there be a restrunt at the end of the universe ?
    (sorry had to have a DNA line in ther esomeware)

    We can leave the favourite gun topic for the people that still think that Star trek style ships might happen
     
  11. VidyaVince

    VidyaVince vidya gaems

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    Damn, The Lounge forum is pretty deep.
     
  12. DBloke

    DBloke The last original
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    No thats just the topics that require some kind of intelgance
     
  13. Napalmbrain

    Napalmbrain WiiChat Member

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    Well there black holes at the centre of every galaxy, but they don't suck in everything, only things that go near them. In fact its possible they actually shrink over time by Hawking (master of the universe LOL) radiation. Unfortunately after a very long time the Universe runs out useful energy (as mentioned above) anyway.
     
  14. DBloke

    DBloke The last original
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    Ours is spinin into one as we speak

    [For the dim]
    Dont worry it wont be a problem for a few thousand life times
    [/For the dim]

    And those rouge ones might get us before that
     
  15. Squall7

    Squall7 A li'l bit different

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    I heard in AS level physics (which was years ago), that neutrinos are emitted from black holes... (at least some kind of particle anyway).

    But back to the topic at hand. I personally believe that we will inevitably loop, both space and time. It's the only way the universe makes sense to me.
     
  16. Gikoku Harakami

    Gikoku Harakami ミュージック

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    Yeah, it will be a long time till that happens, but I feel sorry for those who will be alive when the time comes... if they survive the upcoming climate change. :sick:

    The universe as infinite?.. no, I say they use that term as a way of saying the universe will never stop expanding until it eventually dies.
     
  17. Napalmbrain

    Napalmbrain WiiChat Member

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    Yes, that's the Hawking radiation I mentioned.

    Why does it have to be a loop?
     
  18. DBloke

    DBloke The last original
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    Well yes black holes do spew out matter
    A hole smaller than that >. cant put it everyware

    The only way of tellin if the unverse is a loop is to send two probes off in diffrent dircetions and if they come back its knida proof that it dose

    Unless there are aliens with a sense of humor
     
  19. Gikoku Harakami

    Gikoku Harakami ミュージック

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    I'm a little confused on that as well.. The universe would literally have to be infinite in time or basically truly immortal, to keep looping the lifespan of all life inside it.
     
  20. Squall7

    Squall7 A li'l bit different

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    :smilewinkgrin: Yay! I remembered something from Physics.

    It explains how the universe could have it's laws of conservation in tact without the need for a beginning or an end.

    Of course, that's on the basis that the laws of physics are a constant anyway.

    I always liked the speculation and theories behind physics, but could never really get my head around most of the actual facts. Apart from the basics (like Newtons laws)...

    Lifespan? Energy cannot be created nor destroyed, only converted. With this in mind, the energy of the universe is at a constant. In essence, it doesn't have a "lifespan" per se. The nearest thing we could refer to as a "lifespan" is the point where everything radically changes (such as the big crunch theory). Even then, it's more refering to our state of being rather than an actual "lifespan".

    Actually, that wouldn't prove it. Based on the concept of space being bent by gravitational fields, it's perfectly plausable that a probe would eventually bend back on itself from the gravitational pull of the nearest masses in space.

    Makes me think of the reason the MIA spacestation had to come down - they didn't count on the infintecimal resistance and therefore decelloration through space dust and random particles in space. If only they had fitted boosters...
     
    #20 Squall7, Mar 12, 2008
    Last edited: Mar 12, 2008

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