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 Lunar Module was because NASA was afraid that the word "excursion" might lend a frivolous note to Apollo. After the name change from "LEM" to "LM", the pronunciation of the abbreviation did not change, as the habit became ingrained among engineers, the astronauts, and the media to universally pronounce "LM" as "lem" which is easier than saying the letters individually. To allow astronauts to learn lunar landing techniques, NASA contracted Bell Aerosystems in 1964 to build the Lunar Landing Research Vehicle (LLRV), which used a gimbal-mounted vertical jet engine to counter 5/6 of its weight to simulate the Moon's gravity, in addition