High Quality Content by WIKIPEDIA articles! The Apollo spacecraft was composed of three parts designed to accomplish the American Apollo program`s goal of landing astronauts on the Moon by the end of the 1960s and returning them safely to Earth. The expendable (single-use) spacecraft consisted of a combined Command/Service Module (CSM) and a Lunar Module (LM). Two additional components complemented the spacecraft stack for launch vehicle assembly: a Launch Escape System (LES) to be used only in the event of a launch emergency, and a Spacecraft/Lunar Module Adapter (SLA) designed to connect the CSM to the launch vehicle and to house the LM.