Two private companies are partnering up to establish a repeatable debris removal service for low Earth orbit. The U.S. firm Portal Space Systems and Australian startup Paladin Space are working together to establish the commercial Debris Removal as a Service (DRAAS) for removing multiple debris objects during a single mission. Space debris experts estimate there are nearly 130 million pieces of junk in orbit, ranging from fragments from explosions and satellite deployments up to huge pieces such as abandoned spacecraft and spent rocket stages . That number alarms many people in the space community and has spurred efforts to start cleaning up our orbital neighborhood. Some companies have already made serious headway on this effort, showing that debris capture is technically feasible . But Portal and Paladin want to go a few steps further. "This is about making debris removal operational, not experimental," said Jeff Thornburg, CEO of Portal Space Systems, in a statement .…