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What is a Lagrange Point in space sciences?

Category : Space Technology | Answer: 1 8 Months Ago

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Lagrange point is a position in space where the combined gravitational forces of two large bodies, such as Earth and the sun or Earth and the moon, equal the centrifugal force felt by a much smaller third body such as a satellite or a space station.

Such interaction of the forces creates a point of equilibrium where a spacecraft may be “parked” to make observation.

These points are named after Joseph-Louis Lagrange, an 18th-century mathematician.

There are 5 such points between the earth and the sun namely – L1, L2, L3, L4 and L5.

Some USA and Japan missions placed their observatories in L1 position to study the sun. Currently India is trying to put a space observatory named Aditya-1 in L5 position to study the sun.

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