Bell and Hewish's discovery was the first known evidence for this, and the pulsing signal source became known as a pulsar. They changed the name of the signal from LGM to CP, for Cambridge pulsar.

The "L" in LGM is the Department of Defense designation for silo-launched; "G" means surface attack; "M" stands for guided missile, the 30 stands for the Minuteman series of missile and the G ...