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The Lagrange points associated with the Sun-Earth system.
Lagrange Points are positions in space where the gravitational forces of a two-body system like the Sun and the Earth balance out, allowing a spacecraft to remain in position with reduced fuel consumption.
The image includes a small icon representing NASA’s WMAP spacecraft orbiting around L2, which is about 1.5 million km from Earth.
ESA missions orbiting Lagrange points include: ICE, LISA Pathfinder and SOHO at L1, and Herschel, Planck, Gaia at L2.
Future ESA Lagrange point missions include JWST, Euclid and Plato (L2), while a study is under way for a future space weather mission at L5.
Note: Image is not to scale