Do You Know Your Atmosphere?

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Across
  1. 5. The outermost layer that gradually fades into space
  2. 8. The planet surrounded by the atmosphere
  3. 10. Used to study space and human anatomy
  4. 14. The layer where meteors burn up
  5. 15. Balloons, Used to observe weather
  6. 16. The total number of satellites in a GPS constellation
Down
  1. 1. What the Northern and Southern lights are know as
  2. 2. Generally orbit in the exosphere
  3. 3. Where space begins
  4. 4. Layer, Generally found in the Stratosphere to protect us from UV radiation
  5. 6. The layer where most commercial aircraft fly
  6. 7. The boundary between the thermosphere and exosphere
  7. 9. Responsible for warming the earth
  8. 11. The layer where the International Space Station orbits
  9. 12. The layer where weather and clouds form
  10. 13. The boundary between the troposphere and stratosphere