Will a satellite located at one of the "Lagrange points" stay there forever?

Hi Kevin,

Satellites at some of the Lagrange positions do not stay there unless
they fire their rockets occasionally. These Lagrange points are also
known as libration points.

The word "libration" is probably a reference to the tipping back-and-
forth motion felt by the satellite, and most likely comes from the
same root as the name of the constellation Libra, the scales.

-Neal.

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