DARPA's Robotic Servicing of Geosynchronous Satellites (RSGS) payload resides in the cryogenic thermal vacuum chamber at the U.S. Naval Research Laboratory’s Naval Center for Space Technology in Washington, D.C., on Oct. 8, 2024. (Image credit: U.S. Navy | Sarah Peterson) DARPA is at last ready to test fueling up satellites in faraway Earth orbits, to keep those machines working a little bit longer. DARPA's (Defense Advanced Research Projects Agency) long-delayed Robotic Servicing of Geosynchronous Satellite (RSGS) demonstrator is slated to launch as soon as this summer, the U.S. military's research and development group stated in a statement on Wednesday (May 20). And as the name suggests, robots will form an integral part of the spacecraft's work.…