Space Crossword

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Across
  1. 3. solar atmosphere
  2. 6. time to complete one full spin on its axis
  3. 9. complete trip through an orbit
  4. 10. shooting stars
  5. 11. big ball of gas which gives off light and heat
  6. 12. invisible force which holds objects in place
  7. 14. made of many galaxies
Down
  1. 1. made of many solar systems
  2. 2. object orbiting a planet
  3. 4. regular repeating path
  4. 5. cosmic snowballs
  5. 7. an object orbiting a star
  6. 8. star and objects travelling around it
  7. 13. rocky, airless worlds