Crystal Grottoes holds the unique position of being Maryland’s only show cave, which means it’s the only cave in the state ...

Pull off the highway to discover an Arizona diner packed with UFO decor, nostalgic eats, and the kind of weird that makes ...

Gypsum is a soft, translucent sulfate mineral that allows just enough light to penetrate for photosynthetic organisms to survive inside, while also protecting them from being desiccated or exposed to ...

The Turquoise Pool stands out as one of Mystery Cave’s most photographed and breathtaking features. This water is so clear ...

Bring up aliens and a lot of people will scoff. But not everyone is laughing. Around the turn of the century, 3.8 million people banded together in a real-time search for aliens -- with screensavers.

A look at alien-like landscapes captured by NASA’s Juno spacecraft.

More than 2,500 alien plant species could find suitable conditions in the Arctic, especially in northern Norway and Svalbard.

For decades, scientists have searched the skies for signs of extraterrestrial technology. A study from EPFL asks a sharp ...

From fossil-filled cliffs to hidden cave mosques, Mangystau offers a rare journey through nature, history, and culture. View ...

Explore this stunning Arizona trail that feels out of this world, with otherworldly rock formations and unique desert ...