From phone boxes and flux capacitors to black holes and hot tubs, sci-fi has created plenty of ways to explore the fourth ...

New SETI research suggests space weather like solar winds could be interfering with alien radio signals, making them harder ...

IMAGES of an unusual pyramid-shaped structure on Mars that look like those in Egypt have reignited wild theories about aliens ...

Scientists believe turbulent “space weather” around distant stars could be scrambling potential alien signals before they ...

Could ancient humans really have built the pyramids without extraterrestrial help? Or do such questions reveal more about ...

A meteor streaked across Cleveland, causing a sonic boom and sparking humorous alien jokes. NASA confirms the meteor ...

Oxygen has been the most important gas in our search for life among the cosmos thus far. On Earth, we have it in abundance ...

The molten planet, with an atmosphere rich in sulfur-bearing gases, is unlike anything astronomers have ever smelled.

Debunking alien claims matters, but so does telling richer, more compelling stories about how humans shaped their own past.

This scene imagines the mysterious beauty of alien worlds beyond our solar system. The landscape features unusual plant life, ...