Solar System

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Across
  1. 2. a small,frozen cluster of dust which orbits the sun
  2. 4. Meaning equal day and equal night
  3. 7. the study of the universe
  4. 9. famous for its rings
  5. 10. center of solar system
  6. 13. beautiful lights seen over the polar regions
  7. 15. closest planet to the sun
  8. 16. a meteorite that is stoney
  9. 17. known as our twin
  10. 18. the distance in which a ray of light would travel in one year
  11. 20. dwarf planet
  12. 21. shortest days of the year (June22 and December22)
  13. 22. when our view of an object is blocked by either another object or the Earths shadow
  14. 25. an imaginary line on which an object rotates
  15. 26. a group of stars, gas and dust that is held together by gravity
  16. 27. a shooting star
  17. 28. when an object is spinning it is said to be rotating
Down
  1. 1. farthest planet from the sun
  2. 3. when the moon is more than half full but less than completley full
  3. 5. our galaxy
  4. 6. a group of stars given names by ancient astronomers
  5. 8. darkening of the moon
  6. 10. a self-luminous object
  7. 11. a brief eruption of intense high-energy radiation from the sun's surface
  8. 12. fifth planet from the sun
  9. 13. a small rocky body orbiting the sun
  10. 14. dark spots on the sun
  11. 19. when something is moving in a circle around another object
  12. 23. an object moving around a star
  13. 24. takes about 365 days to orbit the sun
  14. 27. known as the red planet