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Neptune was discovered just after midnight, [1] after less than an hour of searching and less than 1 degree from the position Le Verrier had predicted, a remarkable match. After two further nights of observations in which its position and movement were verified, Galle replied to Le Verrier with astonishment: "the planet whose place you have ...
The Planet Neptune: An Historical Survey before Voyager. Praxis. Sampson, R.A. (1904). "A description of Adams's manuscripts on the perturbations of Uranus". Memoirs of the Royal Astronomical Society. 54: 143–161. Bibcode:1904MmRAS..54..143S. "John Couch Adams and the discovery of Neptune". Occasional Notes of the Royal Astronomical Society.
From its discovery in 1846 until the discovery of Pluto in 1930, Neptune was the farthest known planet. When Pluto was discovered, it was considered a planet, and Neptune thus became the second-farthest known planet, except for a 20-year period between 1979 and 1999 when Pluto's elliptical orbit brought it closer than Neptune to the Sun, making ...
Neptune All Night was a 9-hour TV program providing live coverage of the Voyager 2 space probe's flyby of the planet Neptune.The show, produced by the Philadelphia-area PBS affiliate WHYY-TV, was broadcast between midnight and 9:00 AM EDT on August 25, 1989, as Voyager 2 passed within 4,950 kilometres (3,080 mi) of the planet Neptune and within 40,000 kilometres (25,000 mi) of Neptune's ...
The dates listed are launch dates, but the achievements noted may have occurred some time later—in some cases, a considerable time later (for example, Voyager 2, launched 20 August 1977, did not reach Neptune until 1989).
Urbain Jean Joseph Le Verrier (French: [yʁbɛ̃ ʒɑ̃ ʒozɛf lə vɛʁje]; 11 March 1811 – 23 September 1877) was a French astronomer and mathematician who specialized in celestial mechanics and is best known for predicting the existence and position of Neptune using only mathematics.
Rings of Neptune imaged by the James Webb Space Telescope's NIRCam instrument. The rings of Neptune consist primarily of five principal rings.They were first discovered (as "arcs") by simultaneous observations of a stellar occultation on 22 July 1984 by André Brahic's and William B. Hubbard's teams at La Silla Observatory (ESO) and at Cerro Tololo Interamerican Observatory in Chile. [1]
Triton was discovered by William Lassell in 1846, just seventeen days after the discovery of Neptune. [3] Nereid was discovered by Gerard P. Kuiper in 1949. [4] The third moon, later named Larissa, was first observed by Harold J. Reitsema, William B. Hubbard, Larry A. Lebofsky and David J. Tholen on 24 May 1981.