Across
- 3. leftover debris from the formation of solar system
- 6. objects that orbit another object
- 9. complete orbit around a center
- 10. group of stars with certain shape and name
- 14. the sun and all of the objects around it
- 16. brightness of a star from Earth
Down
- 1. gas planets with many moons
- 2. planets made of rock or ice and orbit a star
- 4. smaller rocky bodies in space
- 5. large celestial bodies that revolved around sun
- 7. group of rock objects between orbits
- 8. small, rocky, few or no moons
- 11. star at the center of our universe
- 12. natural satellite that orbits a planet
- 13. balls of gas that give off their own light
- 15. a group forming a whole/planets revolving arnd sun