1781
A model of the telescope with which William Herschel found Uranus, at the Herschel Museum of Astronomy in Bath.Image: Mike Young · Public domainscience · Europe
William Herschel finds a new planet
Late on 13 March 1781, in the back garden of his house in Bath, the musician and amateur astronomer William Herschel noticed an object in his home-made telescope that was not a star. He thought at first it was a comet. It proved to be a planet, the first found since ancient times, and it doubled the known size of the solar system. Herschel named it the Georgian Star after King George III, but the name Uranus was eventually adopted.
Source: Royal Museums Greenwich: The discovery of Uranus ↗
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