Galle discovered the planet Neptune in 1846 after mathematician Urbain Le Verrier predicted its existance and asked him to examine a certain section of sky. Galle acknowledged Le Verrier as the discoverer Neptune.
Galle also discovered 3 comets, championed the planetoid observations for determining the solar parallax and discovered a new ring of Saturn.
In 1977, a statue of him was erected in his home town of Grafenhainichen, close to where he was born.
A crater on the Moon and a crater on Mars have been named after him. He is also the namesake of a ring of Neptune and an asteroid, 2097 Galle.
2 sons, Andreas & Georg.
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