Astronomy Crossword Puzzle

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Across
  1. 1. circular orbit
  2. 3. Made up of gas, dust, and stars
  3. 4. Made of ice, methane, ammonia, and dust
  4. 5. Sun's atmosphere
  5. 7. Either terrestrial or gaseous
  6. 8. Comets originate from...
  7. 9. Rock in a planet's atmosphere
  8. 10. Galaxy we live in
Down
  1. 2. uses mirrors to produce images of space
  2. 6. Located between Mars and Jupiter