Earth’s neighbor still has secrets that science is trying to figure out, and one of them is potential signs of life.

Given the size and age of the universe, it should be full of species with technology far more advanced than our own. But so far there is no trace ...

For centuries, humanity has wondered whether we are truly alone in the universe — and now, NASA’s top official believes the ...

A former intelligence official alleges knowledge of bipedal beings, sentient plasmoids and foreign UFO retrievals as the U.S.

Nearly 5,000 exoplanets had been discovered at the time of the video, but the worlds closest to Earth may give us our best opportunity to learn what alien planets are actually like. Proxima Centauri ...

Aliens have been part of media, fiction and stories ever since some of us dared to look up and dream. It's likely that there ...

In searches for past and present Martian life, some scientists say we’ve been too cautious to see what’s right in front of us ...

Add Yahoo as a preferred source to see more of our stories on Google. A rocky planet orbiting in the habitable zone of a sun-like star may look like a perfect place for life to thrive — but not if ...

Alien comes to wipe out human race. Alien’s ship struck by lightning. Alien crashes in Patience, Colorado. Alien loses vital ...

The White House’s controversial Aliens.gov portal dehumanises undocumented non-US citizens by blurring the boundaries between ...

A man who claims to be a time traveler from the year 2033 has shared a series of "shocking" predictions for the future of humanity, including the alleged arrival of aliens in 2028 and worldwide peace ...

After decades of secrecy, stigma, and sometimes silliness—like the conspiratorial tales about recovered spacecraft and alien ...