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Neptune

Adapted from Wikipedia · Explorer experience

A colorful image of the planet Neptune showing its swirling clouds and the Great Dark Spot, captured by the Voyager 2 spacecraft.

Welcome to Neptune!

Neptune is a very special planet in our Solar System. It is the eighth planet from the Sun and the farthest one we know of. Imagine a planet so far away that you need a telescope to see it! Neptune is big, but it is not the biggest. It is the fourth-largest planet.

A Planet Found by Smart Thinking

Neptune was found in 1846, and it’s a story of smart thinking. Scientists noticed that the planet Uranus was moving in a way that didn’t make sense. They guessed another planet might be hiding and pulling on Uranus with its gravity. They calculated where to look, and there it was—Neptune!

A Cold and Windy World

Neptune is very cold because it is so far from the Sun. It also has very strong winds. Some of these winds can blow faster than anything on Earth! The planet looks blue because of the methane in its atmosphere. Methane is a gas that gives Neptune its beautiful color.

Visiting Neptune

Only one spacecraft has ever visited Neptune. This was the Voyager 2 spacecraft, and it flew by Neptune in 1989. It sent back amazing pictures and information about the planet, its rings, and its moons. One of Neptune’s moons, Triton, is very special because it orbits Neptune in the opposite direction from the planet’s rotation. Scientists think Triton might have been captured by Neptune’s gravity from far away.

Neptune is a fascinating world that helps us learn about planets far from the Sun. Even though it is far away, it is full of surprises!

Images

Portrait of the famous scientist Galileo Galilei.
An old telescope used by scientists to discover the planet Neptune, now displayed in a museum.
A scientific illustration showing how the outer planets and the Kuiper belt move and interact in our Solar System.
A comparison image showing the size difference between the planet Neptune and Earth using true color photographs from space.
A stunning view of the planet Neptune showing its beautiful aurora lights, captured by space telescopes.
A photograph of the planet Neptune showing its atmospheric features, including the Great Dark Spot and other cloud patterns, taken by the Voyager 2 spacecraft in 1989.
This series of images shows how the cloud cover on the planet Neptune changes over time, as observed by the Hubble Space Telescope.
A colorful image of swirling cloud formations on the planet Neptune, taken by the Voyager 2 spacecraft, showing how sunlight creates shadows and highlights in the planet’s atmosphere.
A stunning view of Neptune showing large swirling dark spots and bright cloud formations captured by NASA's Voyager 2 spacecraft.
A massive storm called the Great Dark Spot on the planet Neptune, similar to Jupiter's Great Red Spot.
Portrait painting of Urbain Le Verrier, the French astronomer who discovered Neptune using mathematics.
Portrait of Johann Gottfried Galle, a German astronomer who discovered Neptune in 1846.
Portrait of John Couch Adams, a British mathematician known for his work on the discovery of Neptune.

This article is a child-friendly adaptation of the Wikipedia article on Neptune, available under CC BY-SA 4.0.

Images from Wikimedia Commons. Tap any image to view credits and license.