This infographic provides some insight into the litter we have scattered over space over the decades. Space junk, which scientists call orbital debris, poses direct threats to satellites and spacecraft. For instance, the International Space Station has to sidestep dangerous pieces of trash and satellites regularly factor in debris when deciding on a launch date. The countries that explore space are trying to find ways to clean up the mess before the clutter makes launches impossible. In the meantime, it’s helpful to know what’s up there.By: Julie Rossman and Roxanne PalmerSign up for our free newsletter to see exclusive features and be the first to get news and updates on upcoming WSF programs.