Ancient Greeks believed in alien life, as well as in gods, souls, and beings that inhabited the Moon, stars, and Heavens.

Learn how a new model shows how waves form on alien oceans, revealing that gentle winds could create massive swells on Titan, ...

"When it involves illegal aliens who shouldn’t have been here in the first place, it's entirely preventable," Rep. Young Kim ...

A new study proposes detecting life in space by spotting patterns across many planets instead of focusing on one at a time.

A fictional theory created by H. P. Lovecraft ended up changing 2001: A Space Odyssey - and the world.

Deep within massive rocky exoplanets, hidden oceans of molten rock may be generating powerful magnetic fields in an ...