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Mercury

  • What color is Mercury?
  • Is there any water on Mercury?
  • How long does it take to get to Mercury from Earth?
  • How did Mercury get its name?
  • Who discovered Mercury?
  • How many spacecraft have been to Mercury?
  • How old is Mercury?
  • What is Mercury made of?
  • What does the Sun look like from Mercury?
  • What is the weather like on Mercury?
  • Does Mercury have an atmosphere?
  • How far is Mercury from Earth?
  • How long is a year on Mercury?
  • How long is a day on Mercury?
  • How fast does Mercury orbit the Sun?
  • How close is Mercury to the Sun?
  • How strong is the gravity on Mercury?
  • How small is Mercury compared to Earth?
  • Why does Mercury have more craters than the other planets?
  • How hot is Mercury?

How old is Mercury?

Mercury 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 Mercury is about 4.6 billion years old.


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