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 gen 1812 anni – 5 giug 1819 anni)
Aggiunto al nastro di tempo:
Data:
1 gen 1812 anni
5 giug 1819 anni
~ 7 years and 5 months