In 1954 Ehricke postulated a four-man design that might serve a number of different purposes, depending upon altitude and orbital inclination. Such a station might be used for a multitude of scientific research, for orbital reconnaissance, for an observation platform, and as a launch site for more distant space ventures. The station would be launched initially by a large multistaged booster and subsequently visited by crews and resupplied by means of smaller ferry rockets.

• 1954 January 1 - Krafft Ehricke's four-man orbital station. -

  In 'Analysis of Orbital Systems,' a paper read at the fifth congress of the International Astronautical Federation in Innsbruck, Austria, Krafft Ehricke described a four-man orbital station. Arguing that a very large space station was neither necessary nor desirable, Ehricke postulated a four-man design that might serve a number of different purposes, depending upon altitude and orbital inclination. He suggested that such a station might be used for a multitude of scientific research, for orbital reconnaissance, for an observation platform, and as a launch site for more distant space ventures. The station would be launched initially by a large multistaged booster and subsequently visited by crews and resupplied by means of smaller ferry rockets.