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

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 ...

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 ...

NASA's Curiosity Mars rover took this selfie at a location nicknamed "Mary Anning" after a 19th century English ...

Scientists say caves on Mars and icy moons may host microbial life and serve as future habitats for astronauts to be sent to ...

The size of waves on alien worlds will depend as much on the characteristics of the liquid as well as the gravity.

In the town forever linked to a crashed object in 1947, belief has become an industry – and disbelief almost beside the point ...

It’s not little green men with flying saucers and laser guns that scientists are worried about, instead our foes will be much ...

Artemis II astronauts are back on Earth, sharing unique videos and adapting to gravity, while NASA plans for Artemis III.

More delays could be coming. The post Jeff Bezos’ Botched Space Launch Was So Bad It Could Threaten NASA’s Entire Moon ...

The Artemis 2 moon astronauts said they gained a deeper understanding of their Orion capsule —and what they learned bodes ...