Johann Gottlieb Galle

Johann Gottlieb Galle was a German astronomer born in 1812 who is best known for his role in discovering the planet Neptune in 1846. Working at the Berlin Observatory, he used a telescope to study a star chart created by mathematician Johann Friedrich Gauss, which predicted Neptune's position. Galle's careful observations confirmed the existence of the new planet, marking a significant milestone in astronomy. His work helped validate mathematical predictions in scientific discovery and expanded our understanding of the solar system.