NASA had a more ambitious proposal similar to this in the Late 70's in the run-up to the space shuttle becoming operational.It was a system of several artificial reflective moons about 200-250 yards in Diameter deployed in Geosynchronous orbit over North America coast to coast, the idea was to reduce energy use by having twilight conditions overnight. then environmental and animal rights activists complained that it would possibly alter weather patterns???and confuse animal behavior and migration, along with unresolved technical and cost considerations ultimately killed it. there were detailed articles about the plan in Popular mechanics and Science,Aviation week and Omni magazines at the time.