The Earth and its neighbours

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Across
  1. 3. a constellation that looks like a lion
  2. 4. this movement of the earth causes day and night
  3. 6. a dwarf planet which used to be the part of our solar system
  4. 7. heavenly bodies that reflect their own light
  5. 9. a fixed path on which the earth goes around the Sun
  6. 10. smallest planet and also closest to the Sun
Down
  1. 1. second planet from the Sun that has life on it
  2. 2. natural satellite of the earth
  3. 5. An instrument used to see the celestial bodies
  4. 8. The second largest planets with many rings