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Final contact was roughly at a distance of 6.5 billion km (43 AU; 4.0 billion mi) [7] 3 Voyager 2: Voyager 2: 20 August 1977 [2] Titan IIIE Centaur-D1T [8] NASA: Flyby Successful Closest approach at 22:29 on 9 July 1979. Flew past Callisto, Ganymede, Europa, Amalthea and Io at long distances. Later flew past Saturn, Uranus and Neptune.
The radio instruments on board found that Neptune's day lasts 16 hours and 6.7 minutes. Neptune's rings had been observed from Earth many years prior to Voyager 2 's visit, but the close inspection revealed that the ring systems were full circle and intact, and a total of four rings were counted. [4] Voyager 2 discovered six new small moons ...
The Great Dark Spot in exaggerated color as seen from Voyager 2. The Great Dark Spot (also known as GDS-89, for Great Dark Spot, 1989) was one of a series of dark spots on Neptune similar in appearance to Jupiter's Great Red Spot. In 1989, GDS-89 was the first Great Dark Spot on Neptune to be observed by NASA's Voyager 2 space probe.
The Small Dark Spot (sometimes called Great Dark Spot 2 or Wizard's Eye) was another vortex observed by Voyager 2 in its 1989 pass of Neptune. This spot is located approximately 30° further south on the planet and transits the planet once every 16.1 hours. [ 36 ]
Neptune has long been known to have white clouds circling it, but images of the furthest planet in the solar system have shown this changing over time - the most recent image, taken by the Hubble ...
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 Small Dark Spot, sometimes also called Dark Spot 2 or The Wizard's Eye, was an extraterrestrial vortex on the planet Neptune. [1] [2] It was the second largest southern cyclonic storm on the planet in 1989, when Voyager 2 flew by the planet. When the Hubble Space Telescope observed Neptune in 1994, the storm had disappeared. [3]
The timeline of discovery of Solar System planets and their natural satellites charts the progress of the discovery of new bodies over history. Each object is listed in chronological order of its discovery (multiple dates occur when the moments of imaging, observation, and publication differ), identified through its various designations (including temporary and permanent schemes), and the ...