The End

It’s a rather depressing subject for some, but I think it’s interesting. There’s so many theories about so many ends. End of civilization, end of the human species, end of the solar system and so on. What’s your favorite, or the one that makes the most sense to you? Anything goes, I’m a big fan of sci-fi.
My favorite end scenario is the heat death of the universe. It just makes the most sense to me. The universe keeps expanding, and everything just gets too far away from each other. Dying stars quit being recycled into new stars and the universe just goes dark and cold. Eventually, even things like black holes just evaporate. Don't worry though, it's going to take a very, very long time.

I think the most famous one is that 2012 thing and planet X
Unless anything external hit the Earth the earth will never be destroyed.