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Nov 5, 2024 · Since the Voyager 2 flyby, ever-improving terrestrial telescopes, the Hubble spacecraft and the James Webb observatory have brought Neptune into clearer view, allowing scientists to advance their...
Voyager 2 completed its encounter with Uranus in January 1986 and with Neptune in August 1989, and is now also en route out of the solar system. The two Saturn encounters increased our knowledge and altered our understanding of Saturn.
More than 10,000 trajectories were studied before choosing the two that would allow close flybys of Jupiter and its large moon Io, and Saturn and its large moon Titan; the chosen flight path for Voyager 2 also preserved the option to continue on to Uranus and Neptune.
More than 140 years later, in 1989, NASA's Voyager 2 became the first-and only-spacecraft to study Neptune up close. Voyager returned a wealth of information about Neptune and its moons-and confirmed evidence the giant world had faint rings like the other gas planets.
NASA illustration detailing the studies of the proposed Trident mission Neptune (top) and Triton (bottom) three days after flyby of Voyager 2. The orbital properties of Triton were already determined with high accuracy in the 19th century. It was found to have a retrograde orbit, at a very high angle of inclination to the plane of Neptune's orbit.
Feb 27, 2023 · Four hours and six seconds after they had been taken at Neptune, the images from Voyager 2 reached Earth in August 1989, and they showed something weird. Triton, a large moon that orbits Neptune backwards, opposite the direction that most of the other moons in the solar system do, had some dark splotches on its cold icy surface.
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Aug 26, 2019 · Voyager passed behind both Neptune and Triton, with instruments returning data about their atmospheres. The spacecraft also returned spectacular images of the two bodies backlit by the Sun. On its outbound journey, Voyager 2 continued to study Neptune until Oct. 2, 1989.
