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1. www.spacetoday.org › SolSys › NeptuneSpace Today Online - Solar System - Exploring Neptune ...

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   Voyager 2 photographed Neptune's largest moon, Triton, on August 24, 1989, from a distance of 330,000 miles. Triton. Of Neptune's 13 moons, Triton is second farthest from the planet, standing off at distance just beyond 220,000 miles (354,800 km).

2. phys.org › news › 2020-06-nasa-neptune-tridentJune 22 2020, by Evan Gough - Phys.org

   phys.org › news › 2020-06-nasa-neptune-trident

   NASA is deliberating over the next mission in its Discovery Program, narrowing it down to four possibilities: a mission to study Venus' atmosphere, one to observe volcanic activity on Jupiter's...

3. www.jstor.org › stable › pdfVoyager Radio Science Observations of Neptune and Triton - JSTOR

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   Oct 31, 1989 · Masses of Neptune and Triton. The total mass of the Neptune system (Neptune and its satellites) was determined from data col-lected about 35 hours before encounter by the Voyager navigation team, to an accuracy more than 100 times better than previously achieved (8). By combining pre-encounter navigation data with coherent Doppler data

4. www.smithsonianmag.com › science-nature › the-sixThe Six Most Amazing Discoveries We’ve Made About Neptune

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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...

5. science.nasa.gov › mission › voyagerPlanetary Voyage - NASA Science

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   Voyager 1 was launched in September 1977 and flew by Jupiter and Saturn. Voyager 2 was launched in August 1977 and flew by Jupiter, Saturn, Uranus and Neptune. Both spacecraft are now headed out of the solar system into interstellar space.

6. science.nasa.gov › mission › voyagerFact Sheet - NASA Science

   science.nasa.gov › mission › voyager

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   Triton, the largest of the moons of Neptune, was shown to be not only the most intriguing satellite of the Neptunian system, but one of the most interesting in all the solar system. It shows evidence of a remarkable geologic history, and Voyager 2 images showed active geyser-like eruptions spewing invisible nitrogen gas and dark dust particles ...

7. People also ask

   When did Voyager 2 reach Neptune?

   • Voyager 2 passed Neptune in the summer of 1989, the first spacecraft to observe that planet. Passing about 3,000 miles above Neptune's north pole, Voyager 2 made its closest approach to any planet since it left Earth 12 years earlier. Five hours later, Voyager 2 passed about 25,000 miles from Neptune's largest moon, Triton. New inventions.

   Space Today Online - Solar System - Exploring Neptune - Neptune Probe

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   Will Voyager 2 visit Neptune?

   • Until now, the only spacecraft to visit Neptune was Voyager 2, which flew by the giant planet in 1989. Voyager 2, which has traveled to more planets than any other probe in history, probably still will be operating as the new probe arrives at Neptune.

   Space Today Online - Solar System - Exploring Neptune - Neptune Probe

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   How many trajectories were studied before Voyager 2?

   • 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.

   Planetary Voyage - NASA Science

   science.nasa.gov/mission/voyager/planetary-voyage/

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   When did Voyager 1 & 2 encounter Saturn?

   • The Voyager 1 and 2 Saturn encounters occurred nine months apart, in November 1980 and August 1981. Voyager 1 is leaving the solar system. 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.

   Planetary Voyage - NASA Science

   science.nasa.gov/mission/voyager/planetary-voyage/

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   Will a spacecraft visit Neptune in 2027?

   • A major interplanetary exploration mission may head out from Earth in 2015 to arrive at the planet Neptune and its largest moon, Triton, in 2027. Until now, the only spacecraft to visit Neptune was Voyager 2, which flew by the giant planet in 1989.

   Space Today Online - Solar System - Exploring Neptune - Neptune Probe

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   What happened to Voyager 1 & 2?

   • Voyager 1 is leaving the solar system. 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.

   Planetary Voyage - NASA Science

   science.nasa.gov/mission/voyager/planetary-voyage/

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8. www.universetoday.com › 169254 › a-mission-to-tritonA Mission to Triton and Neptune Would Unlock Their Mysteries

   www.universetoday.com › 169254 › a-mission-to-triton

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   Nov 11, 2024 · UT – An Ambitious Mission to Neptune Could Study Both the Planet and Triton. Lead Image: Global color mosaic of Neptune’s largest moon, Triton, taken by NASA’s Voyager 2 in 1989.