dec 28, 1911 BC - Johann Gottfried Galle 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 the planet Neptune and know what he was looking at. Urbain Le Verrier had predicted the existence and position of Neptune, and sent the coordinates to Galle, asking him to verify.[1] Galle found Neptune in the same night he received Le Verrier's letter,
Added to timeline:
Date:
dec 28, 1911 BC
Now
~ 3940 years ago