Some thoughts about the possible fate of the universe.

Even though I feel it's somewhat pointless to ponder the fate of the universe I've been wondering about one possible scenario in contrast to the most widely accepted current theory that the cosmos will continue expanding till it evaporates into nothingness. My thoughts are leaning toward a fate where the black holes at the centers of the biggest galaxies start to grow exponentially until they start eating each other and all the smaller galaxies until at the end some critical mass is reached and then the next bang. This is sort of like the old expansion and contraction repeating cycles with a slightly different twist in the form of a single cosmic black hole forming right at the end of the cycle.
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Bob DeWoody

My motto: Never do today what you can put off until tomorrow as it may not be required.

Multiverses anyone??

john3760
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Scientific America Oct 2008: Forget the Big Bang now it's the Big Bounce

It's encouraging to me to see that there are others that don't buy the concept that the universe will just keep expanding until everything just evaporates to nothing.
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Bob DeWoody

My motto: Never do today what you can put off until tomorrow as it may not be required.

in 10 to the 100th power years the universe will be a cold, dead place.

in 10 to the 100th power years the universe will be a cold, dead place.

I left out the word matter, so my last statement should read "not that it will ever matter to me"
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Bob DeWoody

My motto: Never do today what you can put off until tomorrow as it may not be required.

You can't leave out matter (or it's effects)
when you are contemplating the fate of the universe ;)

john3760
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Jill Tarter's analogy for 50 years of SETI searching compared to the vast volume of space being like a glass of water dipped out of the ocean could also apply, IMO, to what we know about the Universe so far.

Our ancestors might have thought there was no point in sailing too far from land because they could only see or imagine more ocean out there, which they 'knew' had to end somewhere.... Our vantage point from Earth and its vicinity is just as limited as theirs was compared to the scale of what we can see from here.

We just don't know yet. And there's no way to estimate how much we don't know.

Lt

edited...

It could be that the vacuum contains an energy and that if the Universe is expanding then more vacuum and more energy is being created. Since this involves creating something from nothing I find it more appealing to theorize that the universe is spinning and therefore flinging it's masses outward.

What and where is the axis of spin ?? Perhaps in another dimension.

Gravity from another large universe would also seem like an explanation.

Can either of these theories be tested and How ??

I mentioned in a previous thread that our universe has to
be billions of times bigger than we can persieve it
(due to the limitations of the speed of light).
Gravitational effects of the actual universe as it
exists could also be billions of times larger.
We know there should be more mass in the universe,
but we can only persieve the visible universe.
Gravity or it's effects aren't bound by the speed of light,
so possibly "dark matter" doesn't exist and our
perception that there should be more mass is just the
gravitational effects of a much larger (invisible to us)
universe.??
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