Modular Station 1975 Credit: NASA via Marcus Lindroos. 40,518 bytes. 634 x 424 pixels.

NASA carried out a number of space station studies while the Shuttle was being developed in the mid-1970s. The first was McDonnell-Douglas' Manned Orbiting Facility (MOF) , a small 4-man space station that would have been configured differently for various missions, much like the Soviet Salyut stations.

Article by Marcus Lindroos

Electrical System: Solar panels.