Man Made Space Junk?
Space debris, also known as orbital debris, space junk, and space waste, is the collection of objects in orbit around Earth that were created by humans but no longer serve any useful purpose. These objects consist of everything from spent rocket stages and defunctsatellites to explosion and collision fragments. The debris includes dust from solid rocket motors, surface degradation products such as paint flakes, coolant released by RORSAT nuclear powered satellites, clusters of small needles, and objects released due to the impact of micrometeoroids or fairly small debris onto spacecraft. As the orbits of these objects often overlap the trajectories of spacecraft, debris is a potential collision risk.
This unusual object on the NASA picture is much bigger than the vast majority of the estimated tens of millions of pieces of space debris are small particles.
Source and author: Streetcap1 (youtube)