Kayla Moody Vocabulary Puzzle

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Across
  1. 1. Unoffical star pattern or shape
  2. 3. The east to west motion of celestial objects
  3. 4. Large main circular orbit
  4. 6. A figure-eight-shaped diagram that shows the position of the sun from one spot on Earth
  5. 9. When the Sun appears directly above the Earth's equator
  6. 10. The apparent yearly path the sun traces across the stars on the celestial sphere
  7. 11. Imaginary belt in the sky divided into 12 signs
  8. 14. An optical illusion where a planet appears to temporarily reverse it's direction and move backwards
  9. 15. When the sun reaches it's highest or lowest point in the sky relative to the equator
  10. 17. Geometric model featuring a small circle moves along the circumference of a larger circle
  11. 18. Model of the solar system
  12. 19. An imaginary, giant ball with no end
  13. 20. Division of the year
Down
  1. 2. Relating to planet Earth
  2. 5. Stars in the night sky that appear to form a shape or picture from Earth
  3. 7. An astronomical event where one celestial body moves into the shadow of another
  4. 8. Hypothetical medium once believed to fill all space to allow the propagation of light waves and gravity
  5. 12. The yearly motion of the stars and the Sun
  6. 13. Disproved model of the solar system
  7. 16. Relating to the sky