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Galle, Johann Gottfried (1812–1910)

Johann Galle
Johann Galle was a German astronomer who, with Heinrich Louis d'Arrest, made the first observation of Neptune (1846) based on calculations by Leverrier. Though Galle was the first to observe Neptune, its discovery is usually credited to John Adams (who made an earlier calculation) and Leverrier. Galle also discovered the crêpe ring of Saturn (1838) and suggested a method for determining the scale of the Solar System based on the observation of asteroids.

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