The Earth and its neighbours

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