Earth in Space

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Across
  1. 3. Darkest part of an eclipse's shadow
  2. 5. Moon appears completely lit
  3. 7. Phase with a small sliver of the moon lit
  4. 11. When the moon's shadow falls on earth
  5. 12. Amount of the moon always lit by the sun
  6. 13. One spin of the earth; 24 hours
  7. 14. The name for phases of the moon when the lit portion is decreasing
  8. 15. Not the darkest part of an eclipse's shadow
  9. 17. Theory explaining that the moon was created after a collision between Earth and a Mars-like planet
  10. 18. Season caused by the earth tilting away from the sun
  11. 19. Either the longest or shortest day of the year
Down
  1. 1. Phase with a large portion of the moon lit, but not a full moon
  2. 2. Season caused by the earth tilting toward the sun
  3. 4. When the earth's shadow falls on the moon
  4. 6. Type of eclipse where the moon is too far from the sun to cast a large shadow on Earth
  5. 8. When the amount of sunlight is equal to the amount of darkness
  6. 9. Imaginary line passing through the North and South Pole
  7. 10. One orbit around the sun; 365.25 days
  8. 11. Caused by the 23.5 degree tilt of the earth
  9. 14. The name for the phases of the moon then the lit portion is increasing
  10. 15. Type of eclipse where the penumbra falls on an object
  11. 16. Moon appears dark