A set of classified-looking documents claims to reveal a secret government program created to manage UFO encounters, recover ...

We have no idea what kind of life may exist on other planets, so it’s hard to know what to look for. Proxima Kósmos imagines ...

The Mars Moons eXploration spacecraft will fire its thrusters to maneuver into orbit around Mars (depicted in this digital ...

The greatest space movies are so varied that they don’t even all take the same approach to their setting. Some of them are ...

Earth is dotted with humongous, human-made structures that, to an alien eye, may be tell-tale signs of intelligent goings-on.

NASA says it's confident that new spacesuits will be ready for a moon landing in 2028, even though a new report raises the ...

This enigmatic orb has undergone extensive examination and DNA testing, enabling scientists to reveal its true origins ...

Aristotle's views on the nature of the cosmos dominated the Ancient Greek world. He argued that there's only one world, at ...

NASA's Curiosity rover snapped a series of peculiar polygons that look suspiciously like giant fossilized reptile scales.

NASA needs new space suits to land astronauts on the moon by 2028, but development is behind and in danger of slipping ...

The Trump administration is probing concerns surrounding nearly a dozen scientists said to be connected to highly secretive ...