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A Cassini orbiter's view of Mimas, a moon of Saturn discovered by Herschel in 1789. In 1789, shortly after this instrument was operational, Herschel discovered a new moon of Saturn: Mimas, only 250 miles (400 km) in diameter. [71] Discovery of a second moon followed, within the first month of observation. [45] [72] [73]
Uranus: 7th Planet: Herschel first reported the discovery of Uranus on 26 April 1781, initially believing it to be a comet. [17]: 11 January 1787 p: 15 February 1787 Titania: Uranus III Uranus I (1787–1797) Herschel. [18] [19] He later reported four more spurious satellites. [20] Oberon: Uranus IV Uranus II (1787–1797) o: 28 August 1789 [21 ...
Eventually, new moons were discovered also around Uranus starting in 1787 by Herschel, [23] around Neptune starting in 1846 by William Lassell [24] and around Mars in 1877 by Asaph Hall. [25] Further apparent discrepancies in the orbits of the outer planets led Percival Lowell to conclude that yet another planet, "Planet X", must lie beyond ...
1982 – Venera 13 lands on Venus, sends the first photographs in color of its surface, and records atmospheric wind noises, the first sounds heard from another planet. [204] 1986 – Voyager 2 provides the first ever detailed images of Uranus, its moons and rings. [202]
Pages in category "Discoveries by William Herschel" The following 200 pages are in this category, out of approximately 399 total. This list may not reflect recent changes .
Amateur astronomer William Herschel discovers the planet Uranus, although he at first mistakes it for a comet. Uranus is the first planet to be discovered beyond Saturn, which was thought to be the most distant planet in ancient times.
Astronomers have used telescope data to color-correct Voyager 2 images of Neptune and Uranus, revealing that the planets have a similar greenish blue hue.
William discovered Uranus whilst residing in the house in March 1781 using a 7 foot telescope designed and built in the attached workshop. [4] William left Bath in 1782, [4] but Caroline, along with their brother Alexander, remained at the house until 1784. [4] The building has been designated by English Heritage as a grade II* listed building. [4]