Here are ten super facts about Neptune:
Neptune is the eighth and farthest planet from the Sun and is the fourth-largest planet in our solar system.
It is an ice giant planet, with a mostly hydrogen and helium atmosphere along with a small rocky core.
Neptune has a diameter of 49,244 kilometers (30,775 miles), which is slightly smaller than Uranus.
A day on Neptune (the time it takes to rotate once on its axis) lasts about 16.1 Earth hours, while a year (the time it takes to orbit the Sun) is about 165 Earth years.
Neptune has 14 known moons, the largest of which is named Triton.
The planet's atmosphere is primarily composed of hydrogen, helium, and methane, which gives Neptune its distinct blue color.
Neptune has a unique feature called the Great Dark Spot, which is a large storm system similar to Jupiter's Great Red Spot.
The planet has a faint and incomplete ring system, which was discovered in 1984.
Neptune has the strongest winds of any planet in our solar system, with wind speeds reaching up to 2,100 kilometers per hour (1,300 miles per hour).
NASA's Voyager 2 spacecraft is the only spacecraft to have visited Neptune, flying by the planet in 1989 and making numerous discoveries about the planet and its moons.
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