I’m a bit freaked out right now because Stephen Hawking said that aliens are coming to kill us all. I’m paraphrasing a bit there; the actual quote was:
If aliens ever visit us, I think the outcome would be much as when Christopher Columbus first landed in America, which didn’t turn out very well for the Native Americans.
I’ve always believed that if extraterrestrials came here it would be more Close Encounters than Mars Attacks!, because you’d hope that any species advanced enough to develop interstellar travel would have evolved past those sorts of shenanigans. But Dr. Hawking is much smarter than I am, so he must be right and I must be wrong.
So how will they kill us? Take us over with pods, disintegrate us with ray guns, or just blow up the whole planet to make way for a new hyperspace bypass?