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May 6, 2024 · Learn about Neptune, the last and darkest planet in our solar system. Find out how it's similar to Uranus, how long it takes to orbit the sun, and what its rings and moons look like.
Learn about Neptune, the eighth and farthest planet from the sun, and its unique characteristics. Find out how it was named, what it is made of, how it spins, and what storms it has.
Learn about the farthest and fourth-largest planet in the Solar System, named after the Roman god of the sea. Discover its features, such as its blue color, powerful winds, ring systems, moons, and more.
- Neptune is about four times wider than Earth. It takes Neptune 164.8 Earth years (60,190 Earth days) to orbit the Sun. On 11 July 2011, Neptune completed its first full orbit since its discovery in 1846.
- Neptune is the Coldest and windiest Planet in the Solar System. The average temperature on Neptune is about -221.45 degrees Celsius (-366.6 °F).
- Due to its beautiful blue color, Neptune was named after the Roman god of the Sea. In Greek, Neptune is called Poseidon.
- Why is Neptune Blue? Neptune’s atmosphere is made up of hydrogen (80%), helium (19%) and trace amounts of the methane. The methane absorbs the red light from the sun but reflects the blue light back into space.
The planet in our solar system that’s farthest from the Sun may look like a calm blue sea, but it is a stormy world. This planet—Neptune—has the fastest winds ever discovered in the solar system. Winds can whip around Neptune at speeds of more than 1,200 miles (1,900 kilometers) per hour.
Learn about the eighth planet from the Sun, Neptune, its size, distance, moons, rings, atmosphere and more. See photos of Neptune and its largest moon Triton taken by Voyager 2 and Hubble Space Telescope.
