Mar 082020
In 1985 Rockwell International thought that there might be a business case for space based nuclear power systems. The customer base for nuclear reactors in space seemed to be restricted to military satellites (warning and recon mostly) and deep-space exploration systems. Advantages over solar power include resistance to the degradation of PV arrays due to passing through the ionizing Van Allen radiation belts and no need to track the sun. Costs, however, were high… high enough that in the end nothing came of it.