A "subtle" engine problem that triggered the last-second abort of a SpaceX Falcon 9 rocket earlier this month has been resolved, engineers believe, and if ongoing tests go well, NASA plans to press ...

A SpaceX Falcon 9 lifts off May 30 on the Demo-2 commercial crew mission from the Kennedy Space Center. Credit: SpaceX WASHINGTON — NASA and SpaceX say they believe they have identified the Falcon 9 ...

Space Exploration Technologies Corp. (SpaceX) successfully conducted a full mission duration firing of its new Merlin Vacuum engine on March 7, at SpaceX’s Test Facility in McGregor, Texas. The engine ...

SpaceX is replacing two engines on its Falcon 9 rocket that will soon carry four astronauts to the International Space Station. The change is being made after SpaceX found a substance in the engines ...

Space Exploration Technologies (SpaceX) has begun engine testing for its Falcon 9 heavy-lift launch vehicle even as it works to get its first Falcon 1 booster flying. Test-stand firings of the ...

The second stage will take over from there, powered by the Merlin vacuum engine, also known as the MAC. With its extended nozzle and optimized design, the MAC drives maximum performance in the vacuum ...

Space Exploration Technologies (SpaceX) has completed the latest in a series of increasingly powerful test firings of its Falcon 9 booster. The test of the five Merlin 1C engines, arranged in a cross ...

SpaceX’s Falcon Heavy rocket completed a static fire engine test shortly after 11am eastern today, in preparation for its first commercial launch next week. This will mark the second-ever flight of ...