A Flat Earther once made a surprising comeback after people claimed that a selfie taken from top of Mount Everest proved ...

A. W. Stevens, contains an earlier photograph taken by him in the Andes from a height of 21,000 ft. which also shows the curvature of the horizon.

Temperatures are achingly cold in the stratosphere over the Arctic, which can only mean one thing: it's perfect conditions for psychedelic skies filled with rainbow-colored clouds. Type II polar ...

then the curve of the cannonball downward under gravity would match the curvature of Earth. It would keep falling, following this curve, without losing altitude because the planet would be curving ...

Up around 50,000 feet, Drake said he could see the curvature of the earth. At closer to 60,000 feet, where Boom hopes to fly, this curvature becomes even more pronounced. “Everybody’s curious ...