An unusual sighting in a NASA image has reignited speculation that something extraterrestrial once existed on Mars.

Researchers say a biocontainment facility on the Moon could be humanity's last line of defense against potential future alien ...

Scientists are raising concerns that we may be overlooking evidence of extraterrestrial life even when it is present. Hidden ...

When you're looking for signs of extraterrestrial intelligence, it helps to know what you're looking for and to go about it in the most efficient way. But work so far has generally not done so, writes ...

Neil deGrasse Tyson calls on the government to just show the alien, saying Americans are ready for disclosure after years of ...

Experts stress need for transparency while aiming to prevent premature announcements and protect scientists ...

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 ...

Astrophysicist Neil deGrasse Tyson has a blunt request for the government as the Pentagon rolls out the highly anticipated ...

Neil deGrasse Tyson challenges recent UAP disclosures, urging officials to provide concrete evidence of extraterrestrial life ...

There’s no data to suggest that aliens exist. However, if we believed they existed and came to Earth, our planet would offer ...