Sister Cecilia the Unicorn VI

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Across
  1. 2. An object that orbits a star
  2. 3. The blocking of sunlight to Earth that occurs when the moon is directly between the sun and Earth
  3. 7. The blocking of sunlight to the moon that occurs when Earth is directly between the sun and the moon
  4. 8. The periodic rise and fall of the level of water in the ocean
  5. 9. A streak of light in the sky produced by the burning of a meteorid
  6. 10. A pattern or grouping of stars that people imagine to represent a figure or object
  7. 13. A system of organizing time that defines the beginning, length, and division of a year
  8. 14. The part of a shadow surrounding the darkest part
  9. 17. The spinning motion of a planet on its axis
  10. 18. The attractive force between objects; the force that moves objects
  11. 20. Either of the two days of the year on which neither hemisphere is tilted toward or away from the sun
  12. 22. l
  13. 23. A loose collection of ice and dust that orbits the sun
Down
  1. 1. Either of the two days of the year on which the sun reaches its greatest distance north or south of the equator
  2. 4. The scientific law that states that every object in the universe attracts every other object
  3. 5. An object that orbits a planet
  4. 6. The movement of an object around another object
  5. 11. The darkest part of a shadow
  6. 12. One of the different apparent shapes of the moon as seen from Earth
  7. 15. The partial or total blocking of one object in space by another
  8. 16. A hot ball of gas
  9. 19. An imaginary line that passes through a planet's center and its north and south poles
  10. 21. The path of an object as it revolves around another object in space