Name: Five Facts About Neptune, the Farthest Planet in our Solar System
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Neptune has the fastest winds in the solar system—up to 1,500 mph. What else makes it unique?

Getting to know Neptune, the outer-most planet.

Five Facts About the Farthest Planet in our Solar System

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Neptune has the fastest winds in the solar system—up to 1,500 mph. What else makes it unique?

Getting to know Neptune, the outer-most planet.

Five Facts About Neptune, the Farthest Planet in our Solar System

Space & Flight

Five Facts About the Farthest Planet in our Solar SystemPublished: August 19, 2019Onscreen: Five facts about Neptune1. Neptune is the only planet in our solar system not visible to the naked eye. (Pluto is not a planet.)Diameter: ~30,600 milesMass: ~17x Earth’s massDistance from the Sun: ~2.8 billion miles2. Neptune was first predicted by mathematics—before its discovery.3. Even though it’s about 1 billion miles further from the Sun than Uranus, the chemistry of Neptune’s atmosphere is warmer.Uranus: -371ºFNeptune: -353ºF4. Neptune’s winds blow at up to 1,500 mph—the fastest winds in the solar system.5. Triton, one of Neptune’s moons, orbits the planet in the opposite direction of its other moons. One theory: Triton formed far from Neptune and was drawn in by the planet’s gravity.Learn more about Neptune...stream "The Planets: Ice Worlds" online or on the PBS Video App.

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Five Facts About the Farthest Planet in our Solar System

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Explore More

Five Facts About Saturn, the Ringed Gas Giant Planet

The Planets: Ice Worlds

Five Facts About Uranus, the Tilted Planet