Earth, Moon and Sun WB p.B1-D4

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Across
  1. 2. how much of the Moon is always illuminated by the Sun
  2. 3. fourth planet from the Sun
  3. 7. name given to phase of the Moon when a sliver of the Moon is illuminated
  4. 8. when the side of the moon facing Earth is completely lit up (two words)
  5. 10. missions to the Moon were called this
  6. 11. how many planets are there
  7. 12. farthest planet from the Sun
  8. 13. largest body of matter in our solar system
Down
  1. 1. name given to Moon phase when half the Moon is illuminated
  2. 3. Saturn has 62 of these
  3. 4. when the side of the moon facing Earth is not reflecting any light from the Sun (two words)
  4. 5. name given to a phase of the Moon when most of the Moon it illuminated
  5. 6. comparing relative sizes of objects
  6. 7. many of these are actually based on phases of the Moon
  7. 9. even though sunlight is considered to travel in straight lines, the photons actually travel in what?