Moon and sun

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Across
  1. 1. A moon phase that looks like a full circle from earth
  2. 8. moon A phase that looks like less then half a circle from earth
  3. 11. A moon outside our solar system
  4. 12. The sun the planets that orbit the earth
  5. 14. The shape of the illuminated part of the moon as it appears from earth
  6. 16. The nearly path smaller object like the moon travels around the earth
  7. 17. When moon is completely dark
Down
  1. 2. A rocky sphere that travels
  2. 3. A moon phase in which the moon is not as visible from earth
  3. 4. A planet outside are solar system
  4. 5. A moon phase that look like a full more then a half moon
  5. 6. The amount of time it takes for a planet to complete one orbit around a star or stars
  6. 7. The relative size of things
  7. 9. The border between light and dark side of moon
  8. 10. An object diagram our computer program that helps us understand by making it simpler
  9. 13. The stars that is main source of light at center of of are solar system
  10. 15. Something we observe over and over again
  11. 18. To shine light on an object