Across
- 3. the planet we live on
- 6. debris from and object that survives its passage through Earth's atmosphere
- 9. a system of billions of stars with gas and dust
- 12. the outermost shell covering earths surface
- 14. a luminous point in the night sky
- 15. each of the aspects of the moon and planet
- 16. a body moving in an elliptical orbit around a star
- 17. the lowest layer of earths atmosphere
- 19. the natural satellite of earth
- 20. resembling the moon
Down
- 1. an object consisting of ice and dust
- 2. a repeating path that an object in space takes
- 4. everything in space and beyond
- 5. gasses surrounding earth or another planet
- 7. to turn
- 8. the outermost part of earths atmosphere
- 10. the distance equivalent to the distance that light travels in one year
- 11. mostly solid layer of the earth that is in between the outer core and crust
- 13. action of rotating around an axis
- 18. the star that the earth orbits