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

Venus and Mars may have once supported life. This video explores the evidence and theories surrounding the potential for life ...

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

For more than a century, popular culture has trained us to picture extraterrestrials as bug-eyed, bipedal “little green men” ...

The faraway moon has 'a slushy high-pressure ice layer' similar to the melting Arctic that could hide extraterrestrial life.

A strange world just 47 light-years from Earth is rewriting what scientists thought they knew about alien planets. Hidden ...

On Friday, December 19, 2025, comet 3I/ATLAS will make its closest approach to Earth. 3I/ATLAS can be found near the constellation Leo when it reaches its closest distance to Earth, overnight on ...

Vladimir Putin jokes that interstellar comet 3I/ATLAS is a 'secret weapon' as the mysterious object sweeps past Earth.

The 3I/ATLAS interstellar object, which a number of scientists consider to be potentially technological and likely to pose a threat to humanity, is rapidly approaching Earth, causing a new round of ...

If aliens are out there, why haven’t we heard from them? That’s the question at the center of Pop Mech’s new story, “Aliens Probably Exist—But They’re Staying Silent For a Reason, NASA Scientist ...

For a man who claimed he couldn’t carry a tune in a bucket, Stanisław Lem’s writings contain remarkable musical visions – and ...

Alien invasion stories are among the earliest science fiction in the Western canon—they not only explore the strange and unknown but also heighten the stakes by bringing danger inside human ...