Across
- 5. Natural satellite orbiting a planet
- 6. Composed or rock and dust
- 8. All of space and everything in it
- 9. Meteoroid that survives and hits Earth's surface
- 12. The distance light travels in one year
- 13. Vast, distant shell of icy bodies surrounding the solar system
- 15. The first closest planet from our sun
- 16. Round, orbits the Sun, but hasn't cleared its orbital path.
- 17. The second biggest planet in our solar system
Down
- 1. A celestial object that has a nucleus of ice and dust
- 2. The biggest planet in our solar system
- 3. Region beyond Neptune with icy objects and dwarf planets
- 4. A system of billions or millions of stars pulled together by gravity
- 5. Small rock or metal in space
- 7. Our galaxy is
- 8. The third jovian planet away from our sun
- 10. universal expansion and hubbles law
- 11. The colossal, explosive death of a star
- 14. Cloud of gas and dust
- 15. The fourth closest planet from our sun: