RD-180
A pair of RD-180 engines mounted to the base of an Atlas 5 rocket core.

Despite Air Force objections, U.S. lawmakers added money to the omnibus for development of a new liquid-engine rocket to replace the Atlas 5’s Russian-made RD-180.

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Mike Gruss is the chief content and strategy officer at SpaceNews. From 2013 to 2016 he was a senior reporter at SpaceNews covering military space. Previously, he was editor in chief of Sightline Media Group and worked as a reporter and columnist for...