Investigating an area of interesting light rock seen from orbit, Curiosity found some particularly weird-looking structures.

The Outer Limits still feels remarkably modern, with eerie sci-fi stories that inspired generations of genre television.

Nevada has been hiding something from most of its 40 million annual visitors, and it has nothing to do with Las Vegas. Pack ...

When it comes to the search for life elsewhere in the universe, methane and other chemical compounds are seen as signs of ...

The U.S. military released a new batch of files related to UFOs, including one report from a Navy pilot who said a mysterious ...