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

Discover this week's must-see night sky events, moon phases, and stunning astrophotos. Sign up for our skywatching newsletter ...

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

What happens if you get abducted by aliens? Will you be carried off in a flying saucer? Will you be subjected to experiments? Or are the aliens friendly, curiou ...

Teetering near endangered status, the starlet sea anemone produces “an ancient mechanism” for fighting viruses that ...

For nearly a century, Death Valley's Racetrack Playa has baffled onlookers with its mysteriously sliding boulders. Scientists ...

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

A backup version of Skylab was displayed when the Smithsonian’s National Air and Space Museum opened 50 years ago. After ...

The short answer is that there’s nothing to disclose. But that doesn’t mean we won’t make contact with extraterrestrial life ...

Lilo & Stitch 626 #2 hits stores Wednesday! Can Stitch learn to swim, or will a giant squid ruin everything? Plus: flashback ...

MK-Ultra ran from 1953 to 1973 amid fears the Soviet Union and China were brainwashing prisoners during the Cold War.

The “Wow!” signal is one of our best pieces of evidence for aliens, but researchers are building a compelling case for a more ...