HUNTSVILLE, Ala. — ABL Space Systems Corp, Astra Space and Relativity Space will join a pool of launch providers that are eligible to compete for missions awarded under the U.S. Space Force Orbital Services Program (OSP)-4.

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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...