Exoplanets like Earth have been discovered but not all Earth-like planets are equal when it comes to alien life.

More planets could be homes for aliens than we thought, scientists say - Planets we thought were not inhabitable might ...

Astonishingly, we can identify molecules present in the atmospheres of exoplanets.

The Search for Extraterrestrial Intelligence (SETI) focuses on finding technosignatures—potential signs of alien technology. If we look carefully, we might have a chance at detecting their ...

Astronomers have found nearly 6,000 exoplanets orbiting other stars. But for every confirmed detection, there are countless mere hints, inconclusive observations that could just as well be blips of ...

An ocean world that's teeming with microbes — and who knows what other kinds of life — is currently the best explanation for some chemical signatures that the James Webb Space Telescope has spotted in ...

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 ...