Question about the Universe.

Discussion in 'Et Cetera, Et Cetera' started by Mem, Aug 7, 2007.

  1. Mem

    Mem
    Gold Member

    Joined:
    Jul 4, 2006
    Messages:
    8,087
    Likes Received:
    8
    Gender:
    Male
    Location:
    FL
    The big bang theory says that the Universe is expanding.

    Is it expanding into already empty space that is in the universe?

    Or is it creating it's own space as it goes?
     
  2. ManlyBanisters

    Gold Member

    Joined:
    Mar 19, 2007
    Messages:
    12,807
    Likes Received:
    8
    Quoting from wiki (yeah, I know) cos it came up first on google (well, well) and I'm too fucking LAZY to type it up myself:

    The Big Bang is not an explosion of matter moving outward to fill an empty universe. Instead, Space itself expands with time everywhere and increases the physical distance between two comoving points.

    Learn to google, dude... :smile: :tongue:

    This is the understood theory at the moment - there are others. I don't have a personal theory as I am utter shite at physics.
     
  3. SpoiledPrincess

    Gold Member

    Joined:
    Dec 28, 2006
    Messages:
    8,167
    Likes Received:
    29
    Gender:
    Female
    Location:
    england
    I'm utter crap at physics too but I understand that physicists use an expanding balloon to explain how the universe is expanding, I had a physicist attempt to explain it to me for over an hour before he had to admit he didn't really understand it himself. My constant question of 'yeah I get the expanding balloon bit, but what is the balloon expanding into' was one he couldn't answer.
     
  4. tripod

    Gold Member

    Joined:
    Jan 17, 2006
    Messages:
    5,249
    Albums:
    3
    Likes Received:
    460
    Gender:
    Male
    Location:
    Statesville N.C.
    There are multi universes... which one are you referring to?
     
  5. galaxus

    galaxus Member

    Joined:
    Mar 31, 2007
    Messages:
    878
    Likes Received:
    1
    Earth-2 with Superboy Prime LOL:biggrin1:

    (if u guys don't get it, thats ok. its nerd talk)
     
  6. Mem

    Mem
    Gold Member

    Joined:
    Jul 4, 2006
    Messages:
    8,087
    Likes Received:
    8
    Gender:
    Male
    Location:
    FL
    The other one.:banghead2:
     
  7. monstro

    monstro New Member

    Joined:
    Jul 25, 2006
    Messages:
    392
    Likes Received:
    1
    Gender:
    Male
    Location:
    North Carolina
    The Universe is expanding, but, as I understand it, it is not creating new space (all the space in the Universe was created in the Big Bang). Heinz Pagels in his brilliant work, "Perfect Symmetry" explains:

    "[a] common misunderstanding about the expansion of the universe is that the galaxies are moving in the space of the universe the way a swimming fish moves in a river. The interpretations given to the expansion of the universe by Einstein's general relativity theory is that the galaxies are moving with the space, the way a small chip of wood moves with the motion of a river. One may imagine that it is the space of the universe itself which is expanding like a sheet of rubber stretching..."

    This encompasses the expanding balloon metaphor that Spoiled Princess mentioned. It also explains why there's no end to the Universe (despite having heard reviews of a very good restaurant there:tongue:). Picture an ant crawling along an expanding balloon--it won't come to an edge, it'll just eventually come back to where it started.
     
  8. Mem

    Mem
    Gold Member

    Joined:
    Jul 4, 2006
    Messages:
    8,087
    Likes Received:
    8
    Gender:
    Male
    Location:
    FL
    So there is space outside of the expanding universe?. Is that space not part of the universe?

    If you try to blow up a balloon in a finite space. Such as in a box it will pop.

    Therefore, the space the universe expands into is either already there,

    or the universe is creating it as it grows.
    :confused:
     
  9. monstro

    monstro New Member

    Joined:
    Jul 25, 2006
    Messages:
    392
    Likes Received:
    1
    Gender:
    Male
    Location:
    North Carolina
    There's absolutely nothing outside the expanding universe (although string theory posits multiple universes--but that's a different discussion). The space that was created in the big bang is stretching. Cosmologists are still debating whether or not the Universe will keep expanding forever or reach a terminal point where it starts contracting, ending in the so-called big crunch.

    Much like the "Why Has Big Dirigible Been Banned" thread, the Universe is endless and nearly as inexplicable. :tongue:
     
  10. Pecker

    Pecker Retired Moderator
    Gold Member

    Joined:
    Mar 5, 2002
    Messages:
    83,922
    Likes Received:
    34
    Y'all are making my hair hurt.
     
  11. ManlyBanisters

    Gold Member

    Joined:
    Mar 19, 2007
    Messages:
    12,807
    Likes Received:
    8
    :lmao:

    Shit dude - the universe isn't quite that fucking complicated!
     
  12. SpeedoGuy

    Gold Member

    Joined:
    May 18, 2004
    Messages:
    4,229
    Albums:
    1
    Likes Received:
    10
    Gender:
    Male
    Location:
    Pacific Northwest, USA
    22 years ago someone posed this very question to the prof in my general astronomy class. His reply was that the universe is creating its own space as it goes.
     
  13. Mem

    Mem
    Gold Member

    Joined:
    Jul 4, 2006
    Messages:
    8,087
    Likes Received:
    8
    Gender:
    Male
    Location:
    FL
    Doesn't empty space have to exist for it to expand into. (and if it does, isn't that part of the universe?)

    Get in your time machine go back 22 years and ask him that.:biggrin1:

    I guess every answer creates a new question and no one really knows.
    Unless the laws of the universe do not follow logic.
     
  14. ManlyBanisters

    Gold Member

    Joined:
    Mar 19, 2007
    Messages:
    12,807
    Likes Received:
    8
    Maybe you'd like to start by defining what you (think you) mean by 'empty space'?
     
  15. D_smack ash

    D_smack ash Account Disabled

    Joined:
    May 26, 2007
    Messages:
    648
    Likes Received:
    1
    theres billions and billions and billions of star out there and ETs hehehe
     
  16. No_Strings

    Gold Member

    Joined:
    Feb 8, 2007
    Messages:
    4,100
    Likes Received:
    6
    The human brain isn't physically capable of comprehending such things, no 3rd dimensional creature will ever know the answer. Don't turn your hair grey by thinking about it. :smile:
     
  17. monstro

    monstro New Member

    Joined:
    Jul 25, 2006
    Messages:
    392
    Likes Received:
    1
    Gender:
    Male
    Location:
    North Carolina
    You're right on there!

    I think part of the paradoxical quality of what we're discussing is the fact that we're thinking 3 dimensionally. One theory is that beyond the three dimensions of space and the one of time exists a fifth dimensional hyperspace which is the fabric of spacetime. And no, I don't really know what the hell that means either :biggrin1:
     
  18. Mem

    Mem
    Gold Member

    Joined:
    Jul 4, 2006
    Messages:
    8,087
    Likes Received:
    8
    Gender:
    Male
    Location:
    FL
    I mean space that already exists so that the universe can expand into it. But exists outside of the universe.
     
  19. bobabooey69

    Gold Member

    Joined:
    Apr 29, 2007
    Messages:
    3,175
    Albums:
    1
    Likes Received:
    86
    Gender:
    Male
    Location:
    FL
    An interesting theory is that the expansion of the Universe will cease once every star has burnt out and collapsed into black holes.

    The holes' gravitational fields will then begin to draw everthing back to a single point of energy, more than likely creating a critical mass that will cause another big bang, starting everything anew.

    So who knows how many times the universe has expanded and collapsed like that before...fascinating.
     
  20. dreamer20

    Gold Member

    Joined:
    Apr 14, 2006
    Messages:
    4,492
    Likes Received:
    4
    Gender:
    Male
    Location:
    N.Providence

    The universe has loads of vacuum space in comparison to the matter it contains. With enough expansion that matter simply disintegrates.
     
Draft saved Draft deleted