So THE UNIVERSE is 13.8 BILLION YEARS OLD(Allegedly. How they KNOW THIS I don't know)
The SUN is 4.603 BILLION YEARS OLD(Ditto the above)
The EARTH is 4.543 BILLION YEARS OLD(Ditto the above the above)
There are varying estimates depending upon the source you use of how much longer everything we know today will stay and then POOF be gone. Suffice it to say it won't happen in your lifetime.
So the universe dies whenever and along with it dies space and time right? Reality doesn't even exist now we are told. Reality is what we create in order to navigate our lives. We make order out of the chaos because we can't not.
THE BIG BANG is what we are told began everything (well except for that tiny little single atom that already existed before THE BIG BANG per Dr. Hawking.) THE BIG CRUNCH will be the ending. Will nothing exist then in that thereafter or might there be a tiny other residual something like say a tiny atom?
Are you bored to death with such thoughts and meanderings? Are you only interested in what your five senses can confirm and the rest of it is hokey and useless? Why?