Uranus

    • Discovered: March 13, 1781
    • Discovered by British astronomer, William Herschel
    • Named after the Greek god of the sky
    • Radius: 25,559 kilometers (4 times Earth's radius)
    • Circumference: 160,592 kilometers
    • Surface area: 8.11 billion square kilometers (15.9 times Earth's)
    • Mass: 8.68x1025 kilograms (14.4 times Earth's)
    • Average distance from the Sun: 2.87 billion kilometers
    • 27 known moons in its orbitNASA: Uranus - Facts & Figures
      1. Hydrogen
      :
      82.5%
      1. Helium
      :
      15.2%
      1. Trace amounts of Hydrogen DeuterideNASA: Uranus Fact Sheet
    • Most distant planet visible from Earth without a telescope
    • Has a faint planetary ring system
  • Uranus is the seventh planet from the Sun. It is one of the most odd planets in the Solar System because of some unconventional features. Its planetary axis is tilted sideways, and its magnetic field does not emanate from the center of the planet.The Planetary Society: Uranus Facts and Pictures
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