21 celebrities who believe aliens are real — including those who claim to have seen a UFO

Disclosure Day' director Steven Spielberg thinks we're not alone in the universe. He's not the only one.

M John Harrison: ‘If we met a real alien we’d have no clue what they thought’

At 80, SF author M John Harrison is producing some of his best work. He talks about finding his voice, alien intelligence and the advice from Iain Banks that still spurs him on ...