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Lagrangian points |
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Lagrangian pointsFive locations in space where the centrifugal and gravitational forces of two bodies neutralize each other; a third, less massive body located at any one of these points will be held in equilibrium with respect to the other two. Three of the points, L1-L3, lie on a line joining the two large bodies. The other two points, L4 and L5, which are the most stable, lie on either side of this line. Their existence was predicted in 1772 by French mathematician Joseph Louis Lagrange. The Trojan asteroids lie at Lagrangian points L4 and L5 in Jupiter's orbit around the Sun. Clouds of dust and debris may lie at the Lagrangian points of the Moon's orbit around the Earth. |
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Michael Mann's film Ali explores the complexities of life in a Lagrangian point, with forces pulling him between champion boxer and cultural icon. |
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Lagrangian point
