In these science fiction books, extraterrestrial beings are sympathetic, horrifying and everything in between.

There's something deeply unsettling about discovering an object that simply has no business being where it is, or when it is.

What would they think of us? It’s a question that can produce some, well, uncomfortable answers if you happen to be an ...

These findings suggest that the absence of past detections does not mean discovery is imminent. If extraterrestrial ...

An extraterrestrial misunderstanding led to a grave-robbing bonanza at the detriment of valuable Peruvian heritage.

"Hearst Magazines and Yahoo may earn commission or revenue on some items through these links." For every legitimate researcher trying their best to ferret out some evidence of alien life somewhere out ...

The internet went into a frenzy on Friday when a NASA astronaut shared a weird alien-looking photo on social media. The photo showed an object that was floating in the air and appeared to be purple, ...

In 1974, a family in Florida found a strange metal sphere on their property, which they claimed had mysterious powers and movements. The sphere attracted the attention of the media, the military, and ...