Apollo Lunar Module the "Aquarius" and the Command Module "Odyssey". The development and construction of the lunar module is dramatized in the miniseries "From the Earth to the Moon" episode entitled "Spider". This is in reference to LM-3, used on Apollo 9, which the crew named "Spider" after its spidery appearance. The unused LM-13 stood in during the teleplay to depict LM-3 and LM-5, "Eagle", used by Apollo 11. Apollo Lunar Module The Apollo Lunar Module, or simply lunar module (LM, pronounced "Lem"), originally designated the lunar excursion module (LEM), was the spacecraft which was flown to and landed on the Moon. The
Apollo Guidance Computer carried two Apollo Guidance Computers (AGC), one each in the command module and the lunar module, with the exception of Apollo 8 which did not need a lunar module for its lunar orbit mission. The AGC in the command module was the center of its guidance, navigation and control (GNC) system. The AGC in the lunar module ran its Apollo PGNCS (primary guidance, navigation and control system), with the acronym pronounced as "pings". Each lunar mission had two additional computers: The AGC was designed at the MIT Instrumentation Laboratory under Charles Stark Draper, with hardware design led by Eldon C.