What happens after the universe ends? Nothingness? An identical universe forming...

What happens after the universe ends? Nothingness? An identical universe forming? Or a completely different universe forming?

Do you remember the time before you were born ?
Same thing. Time is a human concept. What happens then isn't an understandable concept for most of us; we can only try to theorize.

Short answer : Fuck if we know, and we won't be there to see it anyway.

>most of us
Who would be the exception here? The Pope of Rome? Queen of England?
Obviously understanding the universe may forever be out of our grasp of understanding for reasons of time and scale. It may not even be important.

Time isn't a human construct, you fuckwit. It's simply a rate of change.

Rate of change is a human construct.

According to quantum tunneling an identical universe.

Gravity will probably pull everything together in like some hundred billion years into what was the beginning of time (13,7 billion years ago). It will then be too hot into that point and another big bang will occur, but bigger than our big bang. Then it will take another 500 / 1000 billion years for the next one.

It's strange how despite everything, we have fundamental laws.

We'll never really know how it's all began, or how it's will all end. How can life start if there was no beginning at all?

the universe doesn't end. you get expansion forever in a heat dead universe unit trillions of years from now the last black hole evaporates.
you're an idiot
there is insufficient mass/gravity to reverse the expansion. Big crunch can't happen.

We turn into mushrooms and we get ate by hoomans