NASA Explains How You Use Experimental Rocket Engines to Dodge Soviet Spy Satellites

By Chris Mills on at

NASA's Fermi gamma-ray telescope-cum-satellite recently had a run-in with a defunct Soviet spy satellite, nearly causing a very expensive and very spectacular mid-air explosion. To avoid it, the eggheads had to fire up the one-use-only rocket engines, which were never meant to be lit up during the serviceable life of the satellite. The full tale is in the surprisingly gripping video above. [YouTube via Wired]