Space Review

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Across
  1. 2. an imaginary line around which a planet rotates
  2. 3. The blue planet
  3. 5. Each orbit that a planet makes around the sun
  4. 8. a huge star system that covers many light-years of space
  5. 11. eclipse occurs when the moon passes through the shadow of the earth
  6. 14. Planet closest to the sun
  7. 16. A cloud of dust, gases, and debris in space
  8. 18. Any object that orbits another object in space
  9. 20. The sun’s atmosphere
  10. 21. Dark spots on the photosphere that may be related to solar storms
  11. 22. The scientific study of the stars
Down
  1. 1. The surface of the sun
  2. 4. a group of stars that form a picture in space
  3. 6. the distance that light travels in one year
  4. 7. an energy emitted in the form of beautiful colors of light
  5. 9. Bright clouds of gas on the photosphere
  6. 10. closest star to Earth
  7. 12. The planet that rotates sideways
  8. 13. The Morning Star, the Evening Star
  9. 14. the red planet
  10. 15. The outermost part of the sun, “the crown”
  11. 17. The largest planet
  12. 19. A star that suddenly flares and becomes brighter