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

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

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

The interstellar object 3I/ATLAS has spotted global attention because of its rotating double jet structure. The majority of ...

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

Interstellar object 3I/ATLAS, the third such visitor ever observed, is exhibiting unusual energy and chemical behavior as it ...

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

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

Some scientific breakthroughs may be lost to time due to scandal and redaction, while others are simply a case of waiting for ...

A mysterious metallic monolith was discovered at Magnuson Park on Jan. 1, 2001, quickly becoming one of Seattle’s strangest ...

Weaver was ultimately nominated for an Oscar for her role in Aliens, which she said in an October appearance on the Happy Sad ...

Think you know your Dyson spheres from your dark blobs? This cosmic crossword dives into the strangest, most mind-bending structures ever spotted — or imagined — in the universe.