Solar system

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Across
  1. 2. What is the dwarf planet that used to be classed as a planet?
  2. 6. What do you call an object that orbits around a planet?
  3. 7. What is the closest planet to the sun?
  4. 8. What planet has rings around it?
  5. 10. What is the biggest planet in the solar system?
Down
  1. 1. What is the scientific word for sun?
  2. 2. What do you call an object that orbits around the sun?
  3. 3. What is the word for a measurement of heat?
  4. 4. What is the gas layer on the outside of a planet?
  5. 5. What is at the centre of our solar system?
  6. 7. What planet is known as the red planet?
  7. 9. What planet do we live on?