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

Three symmetrical jets jutting out of interstellar object 3I/ATLAS are showing up in Hubble observations, puzzling astronomer ...

As this interstellar object approached its closest point to Earth, a massive radio telescope attempted to sniff out a ...

When interstellar object 3I/ATLAS was scanned for alien technology, scientists ran the most sensitive search ever attempted.

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

Learn about the 3I/ATLAS mystery as Harvard's Avi Loeb reveals 'wobbling jets' that could suggest the interstellar visitor is ...

Hubble's latest images of interstellar comet 3I/ATLAS reveal sustained, jet-like eruptions and a carbon dioxide-rich coma ...

The Manhattan-sized interstellar visitor hurtling through space has captured the imaginations of UFO watchers for months and ...

While many sci-fi hits have spawned extended franchises, these standalone works prove that science fiction movies can leave ...

The third known visitor from another star system, 3I/ATLAS, has already delivered on one of the biggest promises in modern astronomy: a chance to treat an interstellar object as a potential alien ...

With 3I/ATLAS streaking away from our planet, speculation remains as to whether the interstellar comet is alien or not.

An alien virus creates a hive mind. But the story is how the survivors fail to unite—revealing human cooperation's fragile ...