Who is a French scholar that specialized in Physics and astronomy?
Euler's three-body problem In physics and astronomy, Euler's three-body problem is to solve for the motion of a particle that is acted upon by the gravitational field of two other point masses that are fixed in space. This problem is exactly solvable, and yields an approximate solution for particles moving in the gravitational fields of prolate and oblate spheroids. This problem is named after Leonhard Euler, who discussed it in memoirs published in 1760. Important extensions and analyses were contributed subsequently by Lagrange, Liouville, Laplace, Jacobi, Darboux, Le Verrier, Velde, Hamilton, Poincaré, Birkhoff and E. T. Whittaker, among others.
Rodolphe Radau Jean Charles Rodolphe Radau (January 22, 1835 – December 21, 1911) was an astronomer and mathematician who worked in Paris at the "Revue des deux Mondes" for most of his life. He was the co-founder of the Bulletin Astronomique.