Things in space

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Across
  1. 2. fifth-largest natural satellite in the Solar
  2. 3. Fastest Spinning Planet In The Solar System
  3. 5. gas that is colorless
  4. 9. we live on it
  5. 10. flattest planets
  6. 11. first planet found using a telescope
  7. 12. really hot
  8. 14. many planets do it
Down
  1. 1. launches into the solar system
  2. 2. doesn't have rings
  3. 4. smallest gas giant
  4. 6. spins clockwise on its axis
  5. 7. milky way
  6. 8. the fourth planet from the sun in our solar system
  7. 12. system it is 4.571 billion years
  8. 13. mostly of hydrogen and helium that produce light