What satellites or robots have visited neptune?

Both planets have been visited by a single spacecraft, Voyager 2, which flew by Uranus and Neptune in 1986 and 1989, respectively.

1 Questions & Answers Place. Neptune has 13 moons. Seventeen days later, Neptune's largest moon Triton was discovered as well. Voyager 2 traveled 12 years at an average velocity of 19 kilometers a second (about 42,000 miles an hour) to reach Neptune, which is 30 times farther from the Sun than Earth is. 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. As of February 2020 there are no approved future missions to visit the Neptunian system. Voyager 2 … The exploration of Neptune has only begun with one spacecraft, Voyager 2 in 1989.

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1989: Voyager 2 makes its closest encounter with Neptune, passing just 3,000 miles above the cloud tops of the most distant planet in our solar system. Voyager 2, launched August 20, 1977, visited Jupiter in 1979, Saturn in 1981 and Uranus in 1986 before making its closest approach to Neptune on August 25, 1989.

Some mission plans are still active, while others have been abandoned or put on hold. North is at the top of this composite picture in which the massive planet and its largest satellites have all been scaled to a common factor of 15 kilometers (9 miles) per picture element.

Moons. The other moons are Nereid, discovered from Earth in 1949, and Despina, Galatea, Larissa, Naiad, Proteus and Thalassa found by Voyager 2 in 1989. Triton was discovered in 1846, a month after the discovery of Neptune.

Find answers now! Europa, the smallest of the four moons, is about the size of Earth's moon, while Ganymede is the largest moon in the solar system. NASA, ESA and also independent academic groups have proposed future scientific missions to visit Neptune. The largest is Triton, which is much larger than any of the other moons.