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

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 ...

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 ...

Humans should look to planetary alignments outside of the solar system when searching for signatures of extraterrestrial communications, scientists say. The nascent search for radio transmissions from ...

Project Serpo: The Secret 10-Year Mission to a Planet 40 Light Years Away What if you were offered the opportunity to visit another planet? You get to experience the culture of an alien race, explore ...