The Committee to Nuke Elysium

Operated by the Air Force 20th Space Control Squadron and created by Lockheed Martin, Northrop Grumman and Raytheon, Space Fence is a multistatic radar system capable of detecting almost everything that moves in orbits up to 18,641 miles (30,000 kilometers). From the Hubble or the International Space Station down to the four-inch long metal shards that resulted from the collision of a commercial Iridium communications satellite and a defunct Russian satellite in 2009, this thing can track anything.