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 security risks ...

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

Could humans spread Earth life beyond our planet? Astrobiologists explain where extremophiles might survive and why the risks ...

A striking optical illusion resembling a floating city or alien spacecraft was captured on camera above the countryside in Haicheng, Guangxi, China on May 20, leaving the person who filmed it ...

Thus far, our search for extraterrestrial life points toward Clarke’s former point, suggesting that our little blue dot is ...

The first trailer for Not Alone, Illumination‘s next film starring Timothée Chalamet and Selena Gomez, has been released. The ...

A rare visitor from another star system prompted SETI to hunt for alien technology, but the mysterious object appears to be a ...

Avi Loeb, a Harvard astronomer who has made headlines with his theories about alien encounters, will lead a White House ...

Somewhere in the Mojave Desert, a gleaming white dome sits in the middle of nowhere, and the story behind it is stranger than ...

A U.S. Space Force mission pitting two satellites against each other has completed the organization's first tactical ...