Harvard astrophysicist Avi Loeb claims humanity missed a historic chance to find alien life on interstellar object 3I/ATLAS, warning it may have been a spacecraft on a seeding mission.

(Reuters) -U.S. intelligence officials found no evidence that unidentified aerial phenomena observed by Navy aviators in recent years were alien spacecraft, but the sightings remain unexplained in a ...

A triangular UFO captured on infrared over Area 51 has gone viral, starting alien theories and questions about secret military tech.

Area 51 and other facilities rumoured to be holding alien spacecraft and bodies of extraterrestrial creatures have been ...

Space fans hoping that the intruder from beyond the solar system known as Comet 3I/ATLAS is actually an alien spacecraft may be disappointed by new research that could close the book on this ...

The quirky comet 'Oumuamua, the first interstellar object found visiting our solar system, has been the subject of fascination since being spotted in 2017, including its curious acceleration as it ...