Sounds like Roger Penrose’s theory

He’s a famous physicist if you didn’t know

[removed]

Yes. See Spaceship Zero for fiction based on this idea https://en.wikipedia.org/wiki/Spaceship_Zero

It's possible in the sense that anything that happened before the big bang is unmeasurable and unfalsifiable. At least as far as I'm aware with our current knowledge of physics.

It's why the big bang is considered the start of time. Any events from before it are akin to events that happen inside an event horizon. They don't really exist in any meaningful sense.

Hello u/nolakhsa, your submission "is it possible that a universe lived and died before the Big Bang? (assuming the Big Crunch theory.)" has been removed from r/space because:

• Such questions should be asked in the "All space questions" thread stickied at the top of the sub.

Please read the rules in the sidebar and check r/space for duplicate submissions before posting. If you have any questions about this removal please message the r/space moderators. Thank you.

Big crunch is not a leading theory anymore but yes the big bang is not thought of as THE beginning.

There are several theories as to what happened before the big bang. M Theory is one, Eternal Inflation is another. Roger Penrose has his Interpretation as well...