WASHINGTON — The U.S. Space Force is preparing to launch multiple spacecraft to geostationary orbit in 2027 for two separate in-space services demonstrations: one to test satellite refueling and another to test whether a servicing vehicle can dock with and maneuver another spacecraft.

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Sandra Erwin writes about military space programs, policy, technology and the industry that supports this sector. She has covered the military, the Pentagon, Congress and the defense industry for nearly two decades as editor of NDIA’s National Defense...