Editor’s note: This story has been updated. Northrop Grumman is preparing for the first launch of its Mission Extension Vehicle (MEV), a spacecraft designed to supply propulsion to in-orbit satellites that would otherwise run out of fuel.  MEV-1 is scheduled for launch, along with a Eutelsat satellite, on a Proton rocket from the Baikonur Cosmodrome in Kazakhstan late this month. It was fueled on Sept. 9. Using its electrical propulsion system for orbit raising, it should reach ...


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