It’s also possible that a new, more intelligent life form may appear. If so, being that it is not possible for a human to mate with an ape and reproduce, it stands to reason that if there are any humans still in existence if or when a new life form appears, that it will not be possible for us to mate with that life form either – in fact, we probably won’t even be able to communicate with it – that’s again of course, if any humans even still exist.
What is this stuff about the universe constantly expanding? There’s also the theory that the galaxies are closing in on each other? So, which is it, and how can anyone know these things? I guess they don’t, they are nothing more than unproven theories. I don’t know that there is an end to the universe – either timewise or spacewise. We’re too puny to know such a thing, or to even venture a guess. This brings me back to the human ego, which again, causes many of us want to live forever, some to pass on their genes in hopes that their family line can be perpetuated till infinity, and to have the need to control anybody and anything in its line of sight. Many of us think that we should defy nature, alter our genes, invade other worlds, carry on in our current state till the end of time (that’s of course, a figure of speech). Lucky for the universe that it has the built in atomic map, where the elements feel the need to spread out and do other things – build other worlds, become other forms of life. Maybe they do the same as we do – they simply get bored after a few million years or so, and need to move on. Whatever the case, nothing stays as it is indefinitely, there will come a time when human, earth, and sun will disintegrate, and its building blocks will be blasted into deep space. It will land somewhere, congregate somewhere, and new worlds and life forms will be created.