Across
- 4. Smallest block of matter
- 5. Red planet
- 6. Beutiful ring around it
- 8. Stars, planets,gas and dust held together by gravity
- 10. Super dense objects
- 12. a bowl-shaped depression on the surface
- 13. refers to a mysterious substance
Down
- 1. the matter, energy and space
- 2. two stars orbit around a common center of mass
- 3. Naturl satelite
- 6. giant ball of hot, glowing gas
- 7. Hot and dense point
- 9. Layer of gases that surrounds planet like earth
- 11. Is made when white dwarf cool down
- 12. ice, dust, and gas that orbits the sun