When it comes to the search for life elsewhere in the universe, methane and other chemical compounds are seen as signs of ...

Thus far, our search for extraterrestrial life points toward Clarke’s former point, suggesting that our little blue dot is ...

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

The curious minds at What If explore what would happen if there is alien life on Jupiter's moon Europa.

Scientists are calling for a lunar quarantine facility where samples from Mars, the Moon, and beyond would be examined before being brought to Earth. They warn that even a tiny alien microorganism ...

Titan, Saturn's largest moon, is home to vast lakes and seas - not of water, but of liquid methane and ethane. In this video, ...

Are we alone in the universe? Consider mysterious "extraterrestrial" radio signals. Unexplained gases on other planets.

This new group, which is led by Harvard professor Avi Loeb, aims to advise the Trump administration and the U.S. intelligence ...

The Pentagon's latest declassified UAP files, including eyewitness videos and historical documents, have reignited interest ...

Every time I see the moon in the sky, it makes me happy. Our natural satellite is so familiar it’s easy to take it for ...

Think you have what it takes to live in a Mars and moon simulation for a year? NASA may want to select you as a volunteer.

Does anywhere in the country better represent this era of the American experiment than a self-governing tech-company town ...