Apollo 9 was a mission in NASA's Apollo program. It was the third crewed mission in the Apollo program and was the first flight of the Command/Service Module (CSM) with the Lunar Module (LM). The crew was Commander James A. McDivitt, Command Module Pilot David R. Scott, and Lunar Module Pilot Russell L. Schweickart.[3] The mission was launched on March 3, 1969.[3] The mission tested several things which were important for landing on the Moon, including the LM engines, backpack life support systems, navigation systems, and docking maneuvers.
