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  • www.britannica.com

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  1. More Images

    Neptune

    Eighth and farthest planet from the Sun in the Solar System

    Neptune is the eighth and farthest known planet from the Sun. It is the fourth-largest planet in the Solar System by diameter, the third-most-massive planet, and the densest giant planet. It is 17 times the mass of Earth. Compared to its fellow ice giant Uranus, Neptune is slightly more massive, but denser and smaller. Being composed primarily of gases and liquids, it has no well-defined solid surface, and orbits the Sun once every 164.8 years at an orbital distance of 30.1 astronomical units. It is named after the Roman god of the sea and has the astronomical symbol, representing Neptune's trident. Neptune is not visible to the unaided eye and is the only planet in the Solar System that was not initially observed by direct empirical observation. Rather, unexpected changes in the orbit of Uranus led Alexis Bouvard to hypothesise that its orbit was subject to gravitational perturbation by an unknown planet. Wikipedia

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  2. en.wikipedia.org

    Neptune is the eighth and farthest known planet from the Sun.It is the fourth-largest planet in the Solar System by diameter, the third-most-massive planet, and the densest giant planet.It is 17 times the mass of Earth.Compared to its fellow ice giant Uranus, Neptune is slightly more massive, but denser and smaller.Being composed primarily of gases and liquids, [21] it has no well-defined ...
  3. Nov 20, 2024(Transiting planets are those that appear to pass in front of their parent stars from our point of view.) The astronomers have nicknamed it TIDYE-1 b, derived from "TESS Investigation ...
  4. solarsystem.nasa.gov

    Dark, cold, and whipped by supersonic winds, ice giant Neptune is the eighth and most distant planet in our solar system. More than 30 times as far from the Sun as Earth, Neptune is the only planet in our solar system not visible to the naked eye. In 2011 Neptune completed its first 165-year orbit since its discovery in 1846.
  5. smithsonianmag.com

    Nov 5, 2024Most planets in the solar system have a magnetic field whose spheres of influence look like the symmetric lobes of an hourglass. But the ice giants deviate from their planetary brethren.
  6. Neptune was discovered when astronomers realized that something was exerting a gravitational pull on Uranus, and that it was possible that an unknown planet might be responsible. Through mathematical calculations, astronomers determined there was indeed an undiscovered planet out in space—a year before it was actually seen for the first time ...
  7. education.nationalgeographic.org

    Dec 3, 2024Neptune is the most distant of the solar system's eight planets. Find out about the blue world's orbit, which of Neptune's moons is the largest, and how the planet is home to the most severe weather in the solar system. ... 101. Neptune is the most distant of the solar system's eight planets. Find out about the blue world's orbit, which of ...
  8. science.nasa.gov

    Dec 9, 2024Encountering Neptune in 1989, NASA's Voyager mission completed humankind's first close-up exploration of the four giant outer planets of our solar system. Collectively, since their launch in 1977, the twin Voyager 1 and Voyager 2 spacecraft discovered that Jupiter, Saturn, Uranus, and Neptune were far more complex than scientists had imagined. There was a lot […]
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