(Space) The Satellite Sky, Smithsonian - Air & Space, 1987 It's a layer of human engineered infrastructure that extends furthest from earth, and may be the final structure before our species becomes multi-planetary. This sheet from the Smithsonian looks at the invisible but essential strata of satellites that connect the sphere to itself, providing communication, navigation, images of its surface, and more. Here, the strata of satellites are identified in four major bands, which are identified by their distance from the surface ("90 to 300 Miles". "300 to 630 Miles",... up to "21,750 to 22,370 miles"). Each major satellite is named and color coded to note country of origin (US,USSR,UK,France...). Condition is very good. Overall size is approximately 33.25 x 22 (inches)
