Strange interstellar comet speculated to be alien spacecraft is older than Solar System - Scientists say comet represents ...

From the Greys to the Nordics, these aliens appear frequently across abduction stories and science fiction tales.

WASHINGTON — A polarizing Harvard astronomer known for splashy theories about alien visits has been tapped by the Trump administration to lead a team of outside scientists to study the national ...

Loeb's team will report to a new White House panel focused on UFOs, now often referred to as unidentified anomalous phenomena ...

A striking optical illusion resembling a floating city or alien spacecraft was captured on camera above the countryside in ...

“Disclosure” has become a cult word. It shouldn't be, since all it means, technically, is to reveal something. But the new wave of alien conspiracy theorists have made “disclosure” into a teasingly ...

Jordan Flowers claims Russia and China may be reverse-engineering alien technology, raising national security concerns.

A look at 10 of the greatest alien sci-fi movies, from Ridley Scott's Alien to Denis Villeneuve's Arrival, none by Steven ...

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

A study suggests that stellar plasma may distort alien signals, complicating SETI's search for extraterrestrial life by ...

The group leading the charge in the search for extraterrestrial life has given the all clear: An interstellar comet looks to be completely natural and free of any alien tech. The SETI Institute said ...