Are we alone in the universe? Consider mysterious "extraterrestrial" radio signals. Unexplained gases on other planets.

The European-led LIFE mission aims to use spacecraft in formation to look for biosignatures.

The search for alien intelligence is entering a new phase as scientists expand beyond traditional radio signal searches and explore new ways to detect advanced civilizations. This documentary examines ...

K2-18b is one of the most promising worlds for the search for extraterrestrial life, so astronomers conducted an unusually ...

Apparently, the government isn’t disclosing everything it knows about UFOs. A whistleblower has accused the CIA of attempting to use sites like 23andMe and Ancestry.com to uncover people with ...

The best way to find alien technosignatures is to look for ones that have long survived their creators, according to a new ...

A new exoplanet model screens rocky worlds by their ability to retain atmospheres over geologic timescales, helping narrow the search for potentially habitable planets beyond Earth.

The United States government's recent release of hundreds of previously classified unidentified anomalous phenomena (UAPs) cases spanning the 1940s to the present, along with the new Steven Spielberg ...

Are humans alone in the universe? The answer is more complicated than science fiction might suggest. Scientists have discovered billions upon billions of potentially habitable planets. But if life is ...

The White House launched a website teasing new information on extraterrestrials this week, but it actually delivers immigrant arrest data.

Bring up aliens and a lot of people will scoff. But not everyone is laughing. Around the turn of the century, 3.8 million people banded together in a real-time search for aliens — with screensavers.