Apollo Lunar Module The first manned lunar landing occurred on July 20, 1969 with the Apollo 11 LM "Eagle". Four days later, the Apollo 11 crew in the Command Module "Columbia" splashed down in the Pacific Ocean, completing President John F. Kennedy's goal "before this decade is out, of landing a man on the Moon and returning him safely to the Earth." This was followed by precision landings on Apollo 12 "(Intrepid)" and Apollo 14 "(Antares)".In April 1970, the Apollo 13 lunar module "Aquarius" played an unexpected role in saving the lives of the three astronauts after an oxygen tank in the service
Apollo command and service module separate lunar module, and thus had no provisions for docking with another spacecraft. This, plus other required design changes, led to the decision to design two versions of the CSM: Block I was to be used for uncrewed missions and a single crewed Earth orbit flight (Apollo 1), while the more advanced Block II was designed for use with the lunar module. The Apollo 1 flight was cancelled after a cabin fire killed the crew and destroyed their command module during a launch rehearsal test. Corrections of the problems which caused the fire were applied to the Block II spacecraft,