The unmanned Skylab 1/ Saturn V Space Vehicle is launched from Pad A, Launch Complex 39, to place the Skylab Space Station cluster in Earth orbit. The Skylab 1 payload included four of the five major components of the Space Station-Orbital Workshop, Apollo Telescope Mount, Multiple Docking Adapter, and Airlock Module. In addition to the payload, the Skylab 1 / Saturn V second S-11 stage. The fifth major component of the Space Station, the Command Service Module with the Skylab 2 crew aboard, was launched at a later date by a Saturn 1B from Pad B.