Sun, moon and stars

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Across
  1. 3. THE EARTH CIRCLES THE ___
  2. 4. WE CAN SEE THE MOON AT _____
  3. 6. WE LIVE ON _____
Down
  1. 1. THE _____ CIRCLES THE EARTH
  2. 2. THERE ARE EIGHT _______ IN THE SOLAR SYSTEM
  3. 3. THE SUN IS A _____
  4. 5. WE CAN SEE THE SUN IN THE ____