These classic Star Trek episodes (from TOS, TNG, DS9, and Voyager) are even more relevant today than when they first aired.

A sudden, blazing streak lit up the skies over Northeast Ohio on Tuesday morning, leaving residents across Cleveland and surrounding counties stunned. Witnesses described a flash of light brighter ...

A civilization capable of interstellar travel may also be one that has moved beyond conquest, excess and ecological self-destruction — and it therefore may not want to talk to us.

Could ancient humans really have built the pyramids without extraterrestrial help? Or do such questions reveal more about modern anxieties than the past itself?

Debunking alien claims matters, but so does telling richer, more compelling stories about how humans shaped their own past.

Astronomers have identified a strange new kind of exoplanet that challenges how scientists classify worlds beyond our Solar System. The planet, L 98-59 d, appears to contain a vast ocean of molten ...

Gosling is in full movie star mode in this surefire crowd pleaser.