Pulsars are detected by their regular pulses of radiation - hence the name. If I remember correctly, that is radio waves. Before the nature of pulsars was known, the first pulsars discovered were named LGM-1, LGM-2, LGM-3, and LGM-4 - where LGM is short for "little green men". An astronomers' joke.

Liftgate Control Module ( LGM ).

The Electric Company - 1971 118A - 5.118 was released on:

USA: 31 March 1976

The Electric Company - 1971 118A 5-118 was released on:

USA: 31 March 1976

The duration of The Peacekeeper is 1.63 hours.