We were talking about this in science. Eventually the sun will explode in about 5 billion years and take out the first three planets in it's orbit. But then again, in about 5 billion years, we might have already killed eachother through nulcear war heads, or by the time the sun will explode our technology would have advanced and we would have left earth for another planet. Also it is estimated that about every 30 billion years a comet that has the potential to destroy an entire race(like the dinosaurs) will hit earth. So we will propably all die sooner or later.
