An instrument on the Perseverance rover has identified large, complex carbon compounds alongside unusual patterns on the ...

A strange interstellar comet discovered last year and speculated by a prominent astronomer to be an alien spacecraft could be ...

SETI scientists searched the interstellar object 3I/ATLAS for radio signals that could indicate extraterrestrial technology ...

A rare visitor from another star system has undergone one of the most extensive technosignature searches ever conducted on an ...

Grain-sized remnants of alien technology may get caught in solar wind and land on plants and moons close to us ...

Even at this early stage in our spacefaring age, humanity has already begun sending probes that will eventually reach other ...

A new SETI study suggests we may be overlooking alien signals not because they aren't there, but because their own stars are scrambling them before they escape into space. Turbulent plasma and ...

There's no conclusive evidence of alien life or government cover-ups. But the files released Friday by the Pentagon reveal ...

The 72 files released on Friday don’t include the kind of blockbuster revelation that Trump has teased. There’s no conclusive ...

Americans "deserve the truth," a U.S. congressman has told a press conference as part of a wider transparency campaign.

Researchers at the SETI Institute found no evidence of alien technology after analyzing radio signals from the object. 3I/ATLAS was the third comet ever discovered originating from outside our solar ...