Moon Module: Astro's Sidecar Test-Ready "The Apollo moon-shoot takes another big step forward with the shipment of Lem-One to Cape Kennedy. Lem One is the space sidecar that'll take two American astronauts from the Apollo mother-ship to the moon's surface, and back again. " NASA model simulation of lunar module hovering over lunar surface. TLS astronaut in spacesuit climbing LEM One in hangar on earth. LS/TLS/MSs NASA scientists & engineers working on LEM 1.