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

Pluribus imagines Kepler-22b as an ocean world that sends a gift to humanity through radio waves. In real life, no such ...

Did NASA discover city lights on an alien planet? This video explores the implications and details of the findings that suggest the presence of artificial light sources on a distant exoplanet. The ...

Scientists searched 27 exoplanets for alien technology using planetary eclipses, revealing a new way SETI hunts signals ...

The exoplanet, dubbed PSR J2322-2650 b, has a helium-and-carbon atmosphere, something researchers say they've never seen ...

Saturn's largest moon, Titan, has long been of interest to NASA because they believe it could host an ocean underneath its ...

NASA on Wednesday released new images and data of Comet 3I/ATLAS, the rare interstellar object that set off weeks of speculation — and a full-blown online debate — over whether it could be an alien ...

A Harvard University astrophysicist has sparked a furious debate by warning he cannot rule out that extraterrestrials are ...

With 3I/ATLAS days away from making its closest approach to Earth, agencies worldwide are conducting the largest and most ...