Stuff in Space is a “real-time 3D map of objects in earth’s orbit”, including satellites and debris. This map uses data from Space-Track.org, a website operated by the U.S. Department of Defense. On this map, different kinds of “stuff in space” are color-coded: red for satellites, blue for rocket bodies, and grey for debris. Visitors may also explore different groups of space objects, which include maps of all Global Positioning System (GPS) satellites and their orbits and a map of the debris created by the 2009 collision of the satellites Iridium 33 and Kosmos 2251.  Check it out!