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 ...

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 ...

With humor, science and plenty of pop culture references, Neil deGrasse Tyson’s latest book explores what we know — and don’t ...

Aliens described in some reported UFO encounters may resemble figures long associated with demonic or spiritual phenomena, ...