Across
- 4. Line - a line that separated
- 7. - a vehicle that shoots up into space
- 8. - in the exosphere
- 9. - any object that orbits a larger body in space.
- 10. atmosphere and outer space
- 11. - where the aurora happens
- 15. - Air is thin here
- 16. - a natural bright light in the sky
Down
- 1. - above the troposphere
- 2. - a form of invisible electromagnetic energy
- 3. - comet shaped bubble
- 5. - layer of gases
- 6. - the outermost layer of a star
- 12. - farthest away from earth
- 13. - below the stratosphere
- 14. layer - a region of earths stratosphere