Astronomy MT 2

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Across
  1. 2. outermost layer of the sun's atmosphere
  2. 3. 3 celestial bodies in a row
  3. 4. direction the sun rises
  4. 6. largest planet in our solar system; large red spot
  5. 7. space missions that explored the moon in the 1960s
  6. 8. layer of the sun that emits light
  7. 9. causes Mars' red color; iron oxide deposits
  8. 11. one of the 3 parts of a comet
  9. 13. 3 stars make up the belt; visible during winter
  10. 14. causes the color of the sun that we see
  11. 16. Major Big Dipper
  12. 17. sun-moon-earth
Down
  1. 1. planet with the shortest orbital period
  2. 3. their energy can potentially disrupt electronics on earth
  3. 5. planet that rotates on its side
  4. 8. dwarf planet
  5. 10. north star
  6. 11. source of the sun's energy
  7. 12. first man to set foot on the moon
  8. 15. most famous comet