Across
- 3. solid,rocky and irregular bodies in the inner solar system
- 7. Earth's Magnetic shield
- 11. A Pluto moon
- 12. the oldest unschocked lunar rock
- 13. Best known dwarf planet
- 16. Planet with the Strongest winds.
- 17. One of Jupiter's moons
Down
- 1. Name of the American Space Agency
- 2. another name of the Gas planets
- 4. Tool used to observe objects in space from earth
- 5. the total amount of energy a star radiates into space in one second
- 6. another name for Rocky planets
- 8. One of the first scientists to use the telescope (observed Mars and Mercury)
- 9. Largest Volcano in our solar system
- 10. A Neptune Moon
- 14. A well known asteroid in the asteroid belt
- 15. A "sea" or large circular plain on Moon and Mars