Asteroids contain large quantities of both precious and common metals, and despite the obvious challenges in reaching them, a few startups say these celestial bodies could offer a sustainable ...

Spacefaring countries have for decades been sending thousands upon thousands of satellites and other objects into orbit, where they have become an integral component of modern society. From hundreds ...

Sometimes, what goes up doesn’t come back down — instead, it becomes a problem. Junk is accumulating in space at a fantastic pace, millions of pieces orbit the Earth, from broken satellites to lost ...