Lunar phases

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Across
  1. 3. moon is fully lit
  2. 4. The time required for earth to rotate once on its axis
  3. 5. moon is not lit
  4. 7. when less than a semicircle is lit
Down
  1. 1. when more than a semicircle is lit
  2. 2. The spin of a body on its axis
  3. 6. An event in which the shadow of one celestial body falls on another