An unusual sighting in a NASA image has reignited speculation that something extraterrestrial once existed on Mars.

A set of protocols telling scientists what to do – and what not to do – if they ever detect evidence of intelligent life ...

Scientists are raising concerns that we may be overlooking evidence of extraterrestrial life even when it is present. Hidden ...

But the reviews for ‘Disclosure Day’ among the experts on UAPs—unidentified aerial phenomena—are decidedly mixed.

When you're looking for signs of extraterrestrial intelligence, it helps to know what you're looking for and to go about it in the most efficient way. But work so far has generally not done so, writes ...

SETI scientists searched the interstellar object 3I/ATLAS for radio signals that could indicate extraterrestrial technology ...

“Do not shout ‘alien!’” Amid surge of public interest in UFOs or UAP, one group updated its rules for how news of extraterrestrials should be revealed.

One of the most challenging aspects of astrobiology and the Search for Extraterrestrial Intelligence (SETI) is anticipating what life and extraterrestrial civilizations will look like. Invariably, we ...

Jupiter's moon Europa may have the ingredients necessary for hosting life: liquid water, an energy source and organic compounds. NASA / JPL-CALTECH / SETI INSTITUTE Estimating the chance of getting a ...

A rare visitor from another star system prompted SETI to hunt for alien technology, but the mysterious object appears to be a ...