Antarctica is home to a peak shaped like a perfect pyramid — but contrary to what conspiracy theorists say, the mountain's four symmetrical faces were forged through natural processes.

A hiker looked out over a beautiful sea of clouds from a mountain peak. Footage shows Liberty Arnaiz Sobreira carefully ...

In the 1990s, Lockheed envisioned an aircraft so massive it needed Airbus and Boeing to build it. Explore the story of the Very Large Plane, the jet that could have ruled the skies.

Planets Venus (top), Jupiter (middle), and Mars (bottom) rise above a mountain peak at Yading reserve in China, 2015. A grand celestial reunion is happening through February: Skywatchers will get ...