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

A mysterious visitor from beyond our solar system is defying expectations and igniting fierce scientific debate as it hurtles ...

Interstellar Comet 3I/ATLAS puzzles scientists with a sunward anti-tail and wobbling jets, revealing secrets of alien solar ...

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

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