Johann Gottfried Galle

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A topic known well beyond its field, found in many languages.

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Science and technology

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What Wikipedia says

Johann Gottfried Galle (9 June 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.

Excerpt from the Wikipedia article “Johann Gottfried Galle”, under the CC BY-SA 4.0 license. Read the article on Wikipedia

Image: Olga Radomsky, Public domain, via Wikimedia Commons.