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

"A celebration so bright it reached all the way to space!" ...

"When TESS launched, no one expected it to ever be capable of finding this kind of planet." When you purchase through links ...

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 ...

Discover the 25 Space Events NASA Is Tracking Right Now, from Moon missions to deep space probes and future launches. Explore ...

This weekend marks the United States of America's 250th birthday, so why not celebrate or commiserate with the best July 4th ...

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