From the Greys to the Nordics, these aliens appear frequently across abduction stories and science fiction tales.

Devils Tower, Wyoming (CNN) — The buzz started in a hay meadow at the foot of a mysterious-looking geological formation. Helicopters and trailers arrived in large numbers, famous faces and a ...

For decades, science fiction writers have tried their best to prepare us for eventual contact with aliens. Their efforts are dominated by several recurrent tropes. There's the invasion by a warlike ...

Add Yahoo as a preferred source to see more of our stories on Google. Lucia Gillot, 61, recalls her unforgettable encounter with a mysterious figure on the Llŷn Peninsula - Lorne ...