Across
- 1. Largest moon of Neptune.
- 7. Number of rings Uranus has.
- 8. The only moon know to have an atmosphere.
- 11. Average distance between the Sun and the Earth.
- 13. The Roman God of Agriculture.
- 15. Volcano on Mars.
- 16. Roman God of the Sea.
- 18. Caused by the swirling motion of the Earth's liquid core.
- 20. The surface of the Sun.
- 21. Mercury is rich in this metal.
- 23. One of the largest asteroids in the asteroid belt.
Down
- 2. Objects found past the Kuiper Belt.
- 3. Largest dwarf planet.
- 4. Cause by 23.5 tilt of Earth axis.
- 5. First Uranian moon to be discovered.
- 6. Discovered four main moons of Jupiter.
- 9. Moon likely to collide with Mars.
- 10. Largest Moon in the Solar System.
- 12. Galaxy closest to Milky way is known as a large...
- 14. Venus is also know as...
- 17. Caused by the moon's gravitational pull.
- 19. Moon of Mars.
- 22. Arm Band of the Milky Way in which Solar System is found.