Apollo tested orbital rendezvous and docking procedures that made the lunar landings possible CommandService Modules CSM nicknamed Gumdrop and Lunar Module LM nicknamed Spider are shown docked together as Command Module pilot David R Scott stands in the open hatch March Astronaut Russell L Schweickart Lunar Module pilot took this photograph of Scott during his EVAbrbrScott stands in the open hatch of the Apollo Command Module Gumdrop colour photo Bridgeman Images