If our Moon suddenly vanished, Earth would already face dramatic consequences. But replacing it with entire alien worlds ...

As Maryland’s only show cave open to the public, Crystal Grottoes Caverns offers something you literally cannot experience ...

The crown jewel of Ohio Caverns is the Crystal King, a massive stalactite that dominates one of the main chambers like a ...

Some people thought he was confirming aliens exist. But he later clarified on Instagram that during his time in office, he ...

Far beneath the ocean’s surface, where sunlight never reaches and temperatures soar near underwater volcanoes, life still ...

Hours after saying that Barack Obama acted improperly by allegedly sharing classified information with Americans when he said ...

I could be the best pathologist on planet earth—the undisputed Sherlock Holmes of medical science, even—and I still wouldn’t have the slightest clue what the cause of death is for this particular ...

If life exists elsewhere in the universe, researchers at the University of Washington are finding the clues on Earth to help ...

We've tried this intimate space thriller for the first time, with good graphics, a very personal story and a mystery to solve.

The reality is more nuanced than the viral claim, yet the answer leans more toward yes than no.

The 2000s gave us some of the best sci-fi movies of all time. We've picked the top of the crop and ranked them too. Did your ...