Space Puzzle

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Across
  1. 3. An hard natural object found on earth and in space
  2. 5. Solid piece of rock that lands on earth
  3. 7. Trail of light you see burning in the atmosphere
  4. 8. Comet
  5. 9. What happened to the dinosaurs?
  6. 11. Black abyss in which we float in
Down
  1. 1. Bigger than a meteoroid
  2. 2. Fe
  3. 4. Hole caused by meteoroid
  4. 5. Broken off debris floating through space
  5. 6. Layer of air surrounding the earth
  6. 10. Shooting Star