On this day in 1736 - January 25th - Joseph Lagrange was born.

French mathematician Lagrange was one of the greats of the 18th century, and his work included major contributions to physics and astronomy. He's best known now for his identification of equilibrium points between the gravity of the Earth and that the Sun. NASA's SOHO (Solar and Heliospheric Observatory) sits at one of these points.

Mona Evans
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