The Windiest Planet

The Planet Neptune

Le Verrier named "the planet exterior to Uranus", Neptune. All other planets, excluding Earth, were named after Greek and/or Roman mythology.


  • Mass - 102,410,000,000,000,000 billion kg
  • Polar Diameter: 48,682 km
  • Equatorial Diameter: 49,528 km
  • Equatorial Circumference: 155,600 km
  • Moons: 14
  • Rings: 5
  • Surface Temperature: -201 Celsius
  • Orbital Distance: 4,498,396,441 km
  • Orbital Period: 60,109.03 km

Discovery of Neptune

Wednesday, Sep. 23rd 1846 at 8:45pm


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Composition of Neptune

Neptune is a gas giant, and is made up of 3 different layers:

  1. The Atmosphere: made up of (80%) hydrogen, (19%) Helium, and small traces of ice.
  2. Mantle: made up of water, ammonia, and methane. Extremely hot. Dense/Fluid
  3. Core: made up of iron and nickle.

What are Some of Neptune's Weather Conditions? : Space & Our Solar System