Brilliant Pebbles
Brilliant Pebbles was a United States space-based ballistic missile defense (BMD) system proposed by Lowell Wood and Edward Teller of Lawrence Livermore National Laboratory (LLNL) in 1987, near the end of the Cold War. The system would consist of thousands of small satellites, each with missiles similar to conventional heat seeking missiles, placed in low Earth orbit constellations so that hundreds would be above the Soviet Union at all times.