From Viking to Perseverance, scientists have spent decades chasing chemical hints that could point to life beyond Earth.

With tons of "Star Trek" alien races depicted over the decades, consistency is a tall order. And in the case of these aliens, ...

Rocket Lab launched its 21st and final mission of the year over the weekend, sending a private Japanese Earth-observing ...

From mudstones on Mars to strange gases in exoplanet atmospheres, tentative evidence for extraterrestrial life is starting to ...

For years, planetary scientists treated Titan as an ocean world in disguise, a frozen shell hiding a vast global sea of ...

An instrument aboard NASA’s Europa Clipper spacecraft captured rare ultraviolet observations of an interstellar comet while Earth-based telescopes were blinded by the Sun. The spacecraft’s unique ...

From slimy monsters and body horror to claustrophobic tension and helpless dread, Stranger Things has always worn its sci-fi ...

Could a comet’s tail pointing towards the Sun possibly indicate alien technology, or is it just a strange quirk of dust ...

STP-30 will operate the first-ever DiskSats, a new type of spacecraft developed by The Aerospace Corporation with funding ...

Decades ago, a spacecraft suggested Saturn's largest moon, Titan, had an ocean. New observations suggest that the liquid may look more like slush.

For decades, science fiction writers have tried their best to prepare us for eventual contact with aliens. Their efforts are ...

While alien hunting is often associated with tinfoil hats and flying saucers, the Search for Extraterrestrial Intelligence ...