The Apollo Service Module
A photograph of the Apollo 15 Command and Service Module taken from the Lunar Module while in orbit around the moon is shown below. The Service Module is the dominant cylindrical structure with the rocket motor expansion nozzle attached. The Command Module is the dark looking conical structure attached to the forward end of the Service Module. One of the panels of the Service Module had been jettisoned by pyrotechnics to expose the instruments to the environment (Fig. 7.1).
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