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

Interstellar comet 3I/ATLAS has turned a routine solar system flyby into a natural physics experiment, with a wobbling jet ...

Scientists are digging into the hidden makeup of carbon-rich asteroids to see whether they could one day fuel space ...

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 ...

Project Hail Mary directors Phil Lord and Chris Miller explain the "impossible" challenges they faced while making the film.

Astronomers studying the interstellar object known as 3I/ATLAS say new observations from the Gemini North Telescope in Hawaii ...

New laboratory studies could shed light on a rock containing potential signs of alien life that’s stranded on Mars ...

Why have disclosures from government officials about non-human intelligence been met with silence? Psychology explains the ...

Scientists are decoding fragile meteorites to uncover which small asteroids could become future treasure troves for space ...

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

Astronomers have followed 3I/ATLAS since its discovery on July 1. Hubble photographed it on July 21 from 277 million miles away, revealing a teardrop-shaped cloud of dust wrapped around its icy core.