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...h Lagrange]. [https://en.wikipedia.org/wiki/Augustin-Louis_Cauchy Augustin-Louis Cauchy] exploited infinitesimals in defining continuity and an early form o

...f the telescope. More extensive star catalogues were produced by [[Nicolas Louis de Lacaille|Lacaille]]. The astronomer [[William Herschel]] made a detailed ...Moon and planets. This work was further refined by [[Joseph Louis Lagrange|Lagrange]] and [[Pierre Simon Laplace|Laplace]], allowing the masses of the planets