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Neptune

  • Is Neptune sometimes farther out than Pluto?
  • What is the weather like on Neptune?
  • What is the Great Dark Spot?
  • Does Neptune have rings?
  • How old is Neptune?
  • When was Neptune discovered?
  • How long is a day on Neptune?
  • How far away is Neptune from the Sun?
  • How long does it take to get to Neptune from Earth?
  • How strong is the gravity on Neptune?
  • How big is Neptune?
  • How many moons does Neptune have?
  • How did Neptune get its name?
  • Why is Neptune blue?

How old is Neptune?

Neptune was formed at the same time as the rest of the Solar System, from a large spinning disk of gas and dust. Astronomers think that all this happened about 4.6 billion years ago! So Neptune is about 4.6 billion years old.


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