Celeste Johnson is wrapping up her time in office after eight years. Protecting open space has been a hallmark of her time as ...

A French company plans to take passengers to the stratosphere, floating 15.5 miles above Earth’s surface for three hours in an elegant, mirrored capsule held aloft by a balloon. The capsule is comes ...

If you found the whole billionaire-space-race thing amusing, thinking that it would lead to a new kind of showing off for the world's richest, you were right. Space tourism, still a budding offshoot ...