Harvard's top astronomer lays out his controversial theory that our solar system was recently visited by advanced alien technology from a distant star

Are alien civilizations really possible? If extraterrestrials exist, where are they? How likely is it that somewhere in the universe an Earth-like planet suppor

Aliens are big in America. Whether they’ve arrived via rocket, flying saucer, or plain old teleportation, they’ve been invading, infiltrating, or inspiring

In this compelling and revealing examination, author Rupert Matthews looks afresh at key episodes of alien activity on earth, and sheds light on the many myster