The first unmistakable signal from another intelligence would rank alongside fire and writing in the story of our species, ...

A mysterious metal shard, once thought to be a piece of a UFO that crashed in 1947, has sparked years of wild speculation.

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

Vine Gilligan's sci-fi series Pluribus still has many mysteries left to be solved, and fans have come up with some intriguing ...

In November, SETI Institute researchers contributed expert perspective to media stories on interstellar comet 3I/ATLAS and ...

Nasa’s mission teams use extreme environments to trial equipment and procedures for future lunar and planetary exploration.