Johann Gottfried Galle
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Johann Gottfried Galle was a German astronomer from Radis, Germany, at the Berlin Observatory who, on 23 September 1846, with the assistance of student Heinrich Louis d'Arrest, was the first person to
Johann Galle
Johann Gottfried Galle, 1880
Memorial plaque in Wittenberg
The 9" refractor telescope which Galle used to discover Neptune
Heinrich Louis d'Arrest
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Heinrich Louis d'Arrest was a German astronomer, born in Berlin. His name is sometimes given as Heinrich Ludwig d'Arrest.
Johann Gottfried Galle
…1812 – 10 July 1910) was a German astronomer from Radis, Germany, at the Berlin Observatory who, on 23 September 1846, with the assistance of student Heinrich Louis d'Arrest, was the first person to view and identify the planet Neptune. Urbain Le Verrier had predicted the existence and position of Neptune, and sent the…
Heinrich Louis d'Arrest