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

From lava tubes on Mars to ice pockets on Europa, subterranean environments may offer the best chance of finding life—and ...

Europa looks like a frozen, lifeless moon — but beneath its shattered ice, scientists think there may be a vast saltwater ...

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

Are we alone in the universe? While the search for life beyond Earth has so far turned up empty, the infamous question continues to haunt humanity’s exploration of the vast cosmos. Now, NASA’s ...

NASA scientists managed to grow plants in real lunar soil for the first time, and the results were surprising. Seeds planted in Moon dirt actually sprouted, proving that life can begin even in an ...

NASA’S top chief has weighed in on one of humanity’s biggest mysteries – are we alone in the universe? The US space agency’s administrator Jared Isaacman has revealed he ...

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

NASA's Artemis II mission concludes today as the Orion capsule splashes down after a record-breaking lunar far side flyby.

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 ...

What would they think of us? Today in History: April 12, Euro Disney opens in Paris Artemis II’s moon-traveling astronauts ...

Add Yahoo as a preferred source to see more of our stories on Google. Astronaut Edward H. White II floats outside the Gemini IV spacecraft on June 3, 1965, in the first American spacewalk. - NASA ...