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

Among others, “Stranger Things” most prominently draws from Project MKUltra and the unconfirmed Montauk Project, combining ...

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

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

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

Green-glowing interstellar comet 3I/ATLAS, heading for its December 19 flyby, is spewing key organic 'ingredients for life' like methanol, NASA confirms.

A quiet confession from Zosia exposes how the Others crossed Carol’s boundaries, turning a fragile romance into a catalyst ...

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

In a year full of standout shows, io9 picks the very best genre stories to hit the small screen. io9 watched a lot of TV this ...

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

After nine episodes, Breaking Bad creator Vince Gilligan's new Apple TV series, Pluribus, comes to a close. During this first ...

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