Lagrange refers to Joseph-Louis Lagrange, an influential mathematician and astronomer from the 18th century. He made significant contributions to various fields, including calculus, number theory, and mechanics. His work laid the foundation for many modern mathematical concepts, and he is best known for the Lagrange multiplier method, which is used in optimization problems. In addition to his mathematical achievements, Lagrange also contributed to the field of celestial mechanics. He formulated the Lagrange points, which are positions in space where the gravitational forces of two large bodies balance the centripetal force felt by a smaller object. These points are crucial for space missions and satellite positioning.