Uranus discovered March 13
Uranus is the seventh planet from the Sun. It has the third-largest planetary radius and fourth-largest planetary mass in the Solar System. It is named after the ancient Greek deity of the sky Uranus (Ancient Greek: Οὐρανός), the father of Cronus (Saturn) and grandfather of Zeus (Jupiter). Though it is visible to the naked eye like the five classical planets, it was never recognized as a planet by ancient observers because of its dimness and slow orbit. Sir William Herschel announced its discovery on March 13, 1781, expanding the known boundaries of the Solar System for the first time in modern history. Uranus was also the first planet discovered with a telescope.
In 1783 he gave Caroline a telescope, and she began to make astronomical discoveries in her own right, particularly comets. She discovered eight comets, eleven nebulae and, at her brother’s suggestion, updated and corrected Flamsteed’s work detailing the position of stars. This was published as the British Catalogue of Stars. She was honoured by the Royal Astronomical Society for this work. Caroline also continued to serve as his assistant, often taking notes while he observed at the telescope.
In June 1785, owing to damp conditions, he and Caroline moved to Clay Hall in Old Windsor. In 1786, the Herschels moved to a new residence on Windsor Road in Slough. He lived the rest of his life in this residence, which came to be known as Observatory House. It is no longer standing.
Caroline Lucretia Herschel (16 March 1750 – 9 January 1848) was a German-British astronomer and the sister of astronomer Sir William Herschel with whom she worked throughout both of their careers. Her most significant contribution to astronomy was the discovery of several comets and in particular the periodic comet 35P/Herschel-Rigollet, which bears her name. At the age of ten, Caroline was struck with typhus, which stunted her growth and she never grew past four foot three. Due to this deformation, her family assumed that she would never marry and that it was best for her to remain a house servant. Instead she became a significant astronomer in collaboration with William.