re: The end of A world or the end of THE world ? - Addend:
If our world/Earth would end, I prefer that it would be due to the death of our star and not but some raging asteroid or comet only because the previous would give us a lot more time to do something about unless we have come up with something to deviate an asteroid or comet.
The same has to be said for any OTHER exo-civ. out there.
The question is are we smart enough to survive?
