Across
- 2. huge chunks of irregularly shaped rocks in space
- 6. the 4 farthest planets with no solid surface
- 8. a cloud of billions of comets beyond
- 9. the average distance between the earth and the sun
- 10. between Mars and Jupiter or scattered throughout the solar system
Down
- 1. a piece of space dust or rock
- 3. an imaginary line on which a body rotates
- 4. a meteoroid burning as it enters earth's atmosphere
- 5. the 4 closest planets to the sun
- 7. when a meteor strikes earth