Johann Galle was a German astronomer born on June 9, 1812, in Radis, Germany. He is best known for his role in the discovery of the planet Neptune in 1846. Galle used mathematical predictions made by Urbain Le Verrier to locate Neptune, making a significant contribution to the field of astronomy. Galle worked at the Berlin Observatory and was a professor at the University of Berlin. His work not only advanced the understanding of the solar system but also demonstrated the power of mathematical calculations in astronomy. Galle passed away on July 10, 1910, leaving a lasting legacy in the scientific community.