Could humans spread Earth life beyond our planet? Astrobiologists explain where extremophiles might survive and why the risks ...

From Johnny Cash to Sinead O’Connor, music fans discuss the tracks where the remake outshone the master recording.

A well-worn expression among oceanographers and others who explore the watery depths of planet Earth is that we humans “know the surface of Mars better than our ocean floors.” Covering more than 70 ...

The pilots dubbed the fireballs “foo fighters” but had no idea what they were. Plasma? Enemy tech? Aliens? We still haven’t ...

Steven Spielberg’s latest film “Disclosure Day” asks how people of faith would deal with finding out aliens are real. Sadly, ...

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