A space reconnaissance mission has returned unprecedented imagery of a metal hunk zooming around Earth.
The discarded three-ton rocket, a robust piece of space junk some 36 feet (11 meters) long, is the type of problematic debris agencies seek to remove from our planet's orbit. A future collision could spawn thousands more objects, posing threats to satellites and potentially the International Space Station. The Japanese satellite technology company Astroscale plans to remove this spent rocket stage...