 Johann Gottfried Galle

Johann Gottfried Galle (1812–1910) was a German astronomer best known for his role in the discovery of the planet Neptune. In 1846, he was the first to observe Neptune based on predictions made by mathematicians Urbain Le Verrier and John Couch Adams, who had calculated the planet's position based on irregularities in the orbit of Uranus. Galle's observational work at the Berlin Observatory confirmed the existence of Neptune, marking a significant milestone in astronomy.