Trump has ordered a UFO data release. But if aliens exist, what would they think of us? - For generations, human beings have ...

Humans have wondered for centuries whether we are alone in the universe — and a new study suggests that if alien ...

If I were looking at Earth from a distance, I would be pretty disappointed,” theoretical physicist Avi Loeb says. The debate ...

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

What would alien life from another planet be like? But we rarely ask the opposite: What would they think of us?

Astronomer Jill Tarter has been scanning the skies for signals from intelligent aliens for the past 35 years, but now she's making a career change. Tarter, the inspiration for heroine Ellie Arroway in ...

As Trump orders UFO file release, scientists debate a deeper question—if aliens exist, what would they think of humanity?

Add Yahoo as a preferred source to see more of our stories on Google. Where are all the aliens? No, I don’t mean microbes on Mars or creatures swimming beneath the ice crusts of Europa or Enceladus, ...

A recent theory proposed by a NASA scientist suggests that extraterrestrial civilizations may not possess the wildly advanced technology that many UFO enthusiasts expect. This perspective, which ...

Add Yahoo as a preferred source to see more of our stories on Google. In his classic science fiction novel Contact, Carl Sagan remarked, “The universe is a pretty big place. If it's just us, seems ...

In the third week of August 1977, Ohio State University astronomer Jerry Ehrman was going over a computer printout of signals collected a few days earlier from his university’s “Big Ear” radio ...