Theological debates suggest alien encounters might challenge religious traditionalists more than dismantle faith.

A nutrition scientist applies metabolism, biology and food science to one of science fiction's oldest questions.

In 1877, an Italian astronomer mapped faint lines on Mars and called them canali, meaning channels or grooves. But the word ...

A nun discusses the debate on UFOs, suggesting they may be linked to spiritual forces rather than extraterrestrial beings, ...

Jordan Peele's Nope isn't really about an alien creature — it's about our addiction to spectacle, and we break down exactly ...

By Nate Raymond June 26 (Reuters) - U.S. President Donald Trump's administration has asked the U.S. Supreme Court to let it ...

Add Yahoo as a preferred source to see more of our stories on Google. Illustration by Alberto Mier/CNN When the Trump administration registered the domains Aliens.gov and Alien.gov in March, UFO ...

As the Pentagon releases UFO-related files, the narrative of "Disclosure Day" mirrors real-life discussions on the ...

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

With 'Disclosure Day,' the director returns to a longtime preoccupation. Two Times staffers explore his ongoing fascination with extraterrestrials.

Dean Alito's 'The Experiencers: Full Disclosure' is a fascinating, if uneven, documentary on people abducted by aliens.

In “Disclosure Day,” out Friday, Steven Spielberg is once again inviting audiences to ponder the existence of ...