A scary yet vague question, I know, but is there a specific time in which we suspect the world will actually end? Most of us know about Mayan Civilizations prediction of the end of the world, but obviously that never came true.
Before researching this, I was expecting more of a concise, to the point answer. But that is not the case, as it is impossible to predict exactly when it will happen. The best guess is many many many centuries from now, if it even happens, as in whether or not it continues to expand. One day it will be stretched so far, that it may just curl into itself, effectively killing itself.