Space Words Part 2

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Across
  1. 3. An instrument or device used for observing
  2. 4. An occupation
  3. 6. Each of the four divisions of the year
  4. 8. An inhabitant of the earth.
  5. 10. Place where someone/something is located
  6. 11. An instance of revolving.
  7. 12. A system of millions or billions of stars
  8. 13. Person can travel in a spacecraft.
Down
  1. 1. Between two or more nations.
  2. 2. An expert in or student of meteorology
  3. 5. Practices conducive to maintaining health
  4. 7. The curved path of an object around a star
  5. 9. A gesture/action/sound used to convey information