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  1. This Hubble Space Telescope image of Neptune shows bright, high-altitude clouds of methane ice crystals. The clouds in this Voyager 2 image are estimated to be about 50 kilometers (31 miles) tall. Voyager 2 took this close-up image of Neptune’s mysterious Great Dark Spot.

    • Structure and Surface
    • Time on Neptune
    • Neptune's Neighbors
    • Quick History
    • What Does Neptune Look like?
    Neptune is encircled by six rings.
    Neptune, like Uranus, is an ice giant. It’s similar to a gas giant. It is made of a thick soup of water, ammonia, and methane flowing over a solid core about the size of Earth.
    Neptune has a thick, windy atmosphere.
    One day on Neptune goes by in 16 hours.
    Neptune has such a long journey around the Sun it takes 165 Earth years to go around once. That’s a long year!
    Neptune has 16 moons.
    Neptune is the eighth and most distant planet from the Sun. That means Uranus is Neptune’s only neighboring planet.
    Neptune was discovered in 1846 by Urbain Le Verrier, John Couch Adams, and Johann Galle.
    Only Voyager 2 has visited Neptune.

    Voyager 2 took this picture of Neptune in 1989. Clouds streak across Neptune. Neptune is a very cold, windy world.

  2. Neptune is the eighth planet from the Sun, making it the most distant in the solar system. This gas giant may have formed much closer to the Sun in the early solar system history before migrating out to its current position.

  3. NEPTUNE. It is the coldest planet in our solar system and the farthest from the Sun It has six rings, but they're very hard to see. It has a thick and windy atmosphere Color: Neptune’s atmosphere has lots of methane, which gives it a blue color. For more information about Neptune visit: spaceplace.nasa.gov/all-about-neptune.

  4. Dark, cold and whipped by supersonic winds, giant Neptune is the eighth and most distant major planet orbiting our Sun. More than 30 times as far from the Sun as Earth, Neptune is not visible to the naked eye.

  5. Neptune Distance to sun: about 4.5 billion km Moons: 13 (maybe more) Diameter: 49,528 km at the equator Neptune is the furthest planet from the sun (although small ‘dwarf planets’ such as Pluto are even more distant). Discovered by French and English astronomers in 1846, it is named after the Greek god of the sea.

  6. Mar 11, 2024 · Neptune Observational Parameters Discoverer: Johann Gottfried Galle (based on predictions by John Couch Adams and Urbain Leverrier) Discovery Date: 23 September 1846 Distance from Earth Minimum (10 6 km) 4319.0 Maximum (10 6 km) 4711.0 Apparent diameter from Earth Maximum (seconds of arc) 2.4 Minimum (seconds of arc) 2.2 Mean values at opposition from Earth Distance from Earth (10 6 km) 4348. ...

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