William Herschel discovers Uranus.

William Herschel was a German-born British astronomer and musician who made one of the most important discoveries in the history of astronomy. Born in 1738 in Hanover, Germany, he originally worked as a musician and composer after moving to England. However, his interest gradually shifted toward astronomy, and he began studying the night sky with telescopes that he built himself. Herschel spent countless nights observing stars and cataloging celestial objects, developing a reputation as a highly dedicated and skilled observer.

In 1781, while surveying the sky from his home in Bath, Herschel noticed an unusual object that appeared different from the surrounding stars. At first, he believed it might be a comet because it showed a small disk when viewed through his telescope. After continued observation by Herschel and other astronomers, the object’s orbit revealed that it was actually a previously unknown planet. This marked the discovery of Uranus, the first planet ever discovered with a telescope and the first addition to the known solar system since ancient times.

Herschel’s discovery significantly expanded humanity’s understanding of the solar system, proving that it extended far beyond the orbit of Saturn. Uranus was initially named “Georgium Sidus” (George’s Star) by Herschel in honor of King George III, although the name Uranus was later adopted internationally. The discovery brought Herschel great recognition, and he was appointed the King’s astronomer. His work did not stop there; he went on to discover moons of Saturn and Uranus and contributed greatly to the study of nebulae, star clusters, and the structure of the Milky Way.