In this historical photo from the U.S. space agency, a sketch of Skylab, as drawn by George E. Mueller, NASA associate administrator for Manned Space Flight, is pictured. This concept drawing was created at a meeting at the Marshall Space Flight Center on August 19, 1966.

[Far Out Space Station Concepts by NASA (Gallery )]

The image details the station's major elements. In 1970, the station became known as Skylab. Three manned Skylab missions (Skylab 2 in May 1973; Skylab 3 in July 1973; and Skylab 4 in November 1973) were flown on which experiments were conducted in: space science, earth resources, life sciences, space technology, and student projects.

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Space History Photo: Skylab Concept by George Mueller