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Loading contentUrbain Le Verrier predicted the planet Neptune using mathematics alone. From small irregularities in the orbit of Uranus he calculated where an unseen planet must lie, and on the very night his prediction reached Berlin in 1846 the planet was found within a degree of his position — a triumph of Newtonian celestial mechanics.
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General reference for the history of astronomy, biographies, and cultural context.
Official naming, definitions, constellation boundaries, and astronomical nomenclature.