Sun, Moon, Earth, and Eclipses

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Across
  1. 2. The point where a celestial body is closest to the Sun
  2. 7. The point where a celestial body is farthest from the Sun
  3. 9. When the Moon is closest to the Earth
  4. 11. Element that makes up most of the Sun
  5. 12. Dark center portion of the shadow
  6. 15. Layer of loose dust and small rocks covering Moon
  7. 16. Where the Sun generates heat via thermonuclear reactions
  8. 19. Our longest or shortest days of the year
  9. 21. Outermost atmosphere of Sun that extends outward into space for millions of miles
Down
  1. 1. Moon phase during total lunar eclipse
  2. 3. Bright heavily cratered regions on the Moon
  3. 4. Moon phase during total solar eclipse
  4. 5. When the Moon is farthest from the Earth
  5. 6. Tide with greatest difference between high and low tide
  6. 8. The visible "surface" of the Sun
  7. 10. When there is nearly equal amounts of daylight and darkness
  8. 13. The ratio of light that a surface reflects
  9. 14. Moderate tides due to Moon and Sun pulling water in different direction
  10. 17. Bright streaks radiating from impact craters on the Moon
  11. 18. Lighter outer part of the shadow
  12. 20. Latin for Moon