In 1963 NASA launched the first communications satellite “Syncom 2” into a geosynchronous orbit over the Atlantic Ocean. Since then, humans have slowly and methodically added to this space-based communications infrastructure. Currently, more than 800 spacecraft in geosynchronous orbit form a man-made ring of satellites around Earth at an altitude of 36,000 kilometers. Most of these spacecraft powered down long ago, yet continue to float aimlessly around the planet. Geostationary satellites are so far from Earth that their orbits never decay. The dead spacecraft in orbit have become a permanent fixture around Earth, not unlike the rings of Saturn. They will be the longest-lasting artifacts of human civilization, quietly floating through space long after every trace of humanity has disappeared from the planet’s surface.