Across
- 3. closest to the sun
- 6. what all planets are in
- 8. A measure of the gravitational pull on an object
- 11. side ways planet
- 14. made of fire and other planets rotate around
- 15. orbits around the earth
- 16. "red planet"
Down
- 1. galaxy our universe is in
- 2. biggest planet in our solar system
- 4. holds everything together
- 5. dwarf planet that's not considered a planet
- 7. "only planet with a ring"
- 9. planets that supply life for all humans and also is a inner planet
- 10. a bound system of stars
- 12. Scientist who thought why objects fall
- 13. luminous points in the sky
- 15. measure by how many matter the object is made of