Johann Gottfried Galle 1812 1.) He was the first person with his student to view the planet neptune. 2.) He discovered 3 new comets. 3.) He came up with a new method to measure the solar parallax (1 янв 1812 г. – 5 июн 1819 г.)
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Дата:
1 янв 1812 г.
5 июн 1819 г.
~ 7 years and 5 months