Since the 1970s, a number of geostationary satellites have been placed in the so called "graveyard orbit," an orbit just above the GEO altitude, roughly 100 to 300 km. The sole purpose of this "burial" location is to remove expired satellites from the highly-congested GEO ring about the equator. Although most GEO satellite operators have not taken advantage of removing their old spacecraft, there are over 100 already there. This number will continue to grow, because some 20 GEO birds expire each year, and some of these will be sent to the graveyard. Thus, the total number of graveyard residents...