It seems to me that at the very split second of the big bang our universe was created...Or was it when the big bang occurred millions upon millions upon trillions tons of matter were blasted into a vast nothingness, this occurred aprox. 13.5 billion years ago and our universe has been expanding ever since. However, there will come a day when that expansion will stop and the universe will start to contract until every bit of matter, gas, plasma is compressed into a sphere and through that compression the heat build up is so great that a big bang is produced causing the new universe to expand. My point is maybe "our" big bang is the result of the previous universe's compression and explosion. Perhaps this has been happening thousands of billions of years and countless big bangs...just a thought to ponder
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The most popular theory is that the universe will continue to expand. The belief which is supported by evidence such as the distribution of matter through the universe, the repulsive effect of dark energy, and the increasing speed of separation between galaxies as the distance between them increases.
The evidence indicates that the universe will die a cold death as stars burn out and the remaining heat energy in the universe is spread out over an ever increasing volume.
The rebounding universe is probably not possible, but there are other possibilities for other universes to exist.
One last note, the universe itself sprung from the big bang and inflationary expansion. Contrary to the concept of matter erupting into a vast void, space itself was compacted into a miniscule volume. Matter as well experience it isn't separate from four dimensional space-time, but is part of the fabric of our universe.
JimG
Level 8
Apr 23, 2018
4
Still up for debate, and I might add, a Noble Prize !
magicwatch
Level 7
Apr 23, 2018
2
Bouncing Universe makes sense to me. Some people who believe in reincarnation use the idea for discussion probabilities.
PickledRick
Level 8
Apr 23, 2018
0
Actually the expansion rate has accelerated far beyond the point of a collapse backwards towards a singularity. And matter was not expelled fully formed at the point of ignition, subatomic particules weren't formed for hours afterwards. This is due to the extreme high temperature during that time.
Charlene
Level 9
Apr 23, 2018
3
It was recently discovered that the rate of universal expansion is accelerating. Don't expect the Universe crashing back into a singularity anytime soon
@KashFigueroa that's what I said..
l don't think they know where that point of return is, that's one of the big questions. But yes, they have realized that the expansion is speeding up indicating that we've not reached that point of returning quite yet. All very fascinating.
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