Everything You Ever Wanted To Know About Neptune

23 September marks the anniversary of this blue planet’s discovery

  • Neptune is named for the Greek god of the sea
  • On 23 September 1846, Neptune was discovered by French scientists using mathematical prediction
  • Astronomers hypothesised its existence because Uranus seemed to be affected by an unknown gravity source
  • Neptune’s blue colour isn’t due to the water but rather the methane clouds in its upper atmosphere
  • It’s the only planet in the solar system that cannot be seen without a telescope
  • NASA’s Voyager 2 provided the first pictures of Neptune back in 1989.
  • Neptune is roughly 17 times Earth's mass and nearly 58 times its volume
  • The planet’s winds can reach up to 2,400 kilometres an hour, making them the fasted detected in the entire solar system

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