Do aliens exist? Based on how many alien invasion movies there are, you'd be forgiven that there's gotta be some proof of extraterrestrial life—and that the aliens are out to get us here on Earth. But ...

Aliens attacking Earth is the stuff of sci-fi stories, but what if it really happened? Scientists, military strategists and authors war-game an alien invasion scenario. A continued look at how an ...

We may receive a commission on purchases made from links. Are we alone in the universe? It's a huge question with no easy answer. And, following on from that, if we aren't alone, what would beings ...