Talk:Big Crunch
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Can someone point me to a paper which refers to this:
However there is yet another possibility which will pave way for Big Crunch. When many of the outer cosmological objects lose their gravitational pull to other objects, they assume certain constant velocity. But the objects moving from inner universe with increased velocity approach them and hit them with unimaginable speeds creating huge energy storm. This will cascade to other objects also and finally Big Crunch will take place though the origin may then be different
Roadrunner 19:48, 27 Apr 2004 (UTC)
- No, but I can tell you that is is plain wrong. You see, there is no "inner" and "outer" part of the universe, as the universe has no center. So, for the closed universe (cf. [[Freedman model]s) : There is no specific spot, where the Big Bang happened, because space grew with the expanding matter. At the time of the Big Bang, space itself exploded. There was no surrounding, and so you cannot pinpoint a spot, saying: This is where the Big Bang happened and ther it will all come back again at the Big Crunch. The usual way to imagine this is a balloon: Imagine an inflatable children's balloon with stars drawn on it. The two-dimensional surface corresponds to three-dimensional space. As you inflate the ballon, the stars will move away from each other, so if you take a specific star, the ones in its direct vincinity seem to recede slowly, the ones farer apart faster. An if you let the air out, all the stars fall towards each other, but there is not one star which is in the center, the others falling towards it.
- But, of course, that's all outdated now, as we know that the universe will not recollapse, because the expansion is not being slowed down by gravitation, but accelerated by some so far still mysterious dark energy, and hence the end of the universe will be not the Big Crunch, but the Big Rip. -- Simon A. 12:05, 19 Jul 2004 (UTC)
The "gravitation will be too feeble to completly counter gravity" excerpt from the 3rd paragraph sounds suspiciously. Should it read "gravitation will be too feeble to completely counter inertia" instead?
- Paul Pogonyshev 00:19, 19 Jul 2004 (UTC)
- Yes, of course. I'll change it. Simon A. 12:07, 19 Jul 2004 (UTC)
Time during the Big Crunch
During the Big Crunch, will time go backwards? I know the Big Crunch won't happen, but I just want to know. jettofabulo 04:13, 7 Dec 2004 (UTC)
Big Crunch vs. big crunch
I renamed the page back to the capitalized version.
Google seems to show "Big Crunch" is more common than "big crunch". The usage seems to depend on whether the context is "the" Big Crunch (a hypothetical one-time event) or "a" big crunch (in an even more hypothetically cyclical universe). But the capitalized version does seem to prevail in actual usage. -- Curps 20:25, 7 Mar 2005 (UTC)