Across
- 3. galaxy our universe is in
- 5. measure of gravitational pull on an object
- 7. planet that supplies life for all humans
- 8. star made of fire that other planets rotate around
Down
- 1. balance of the stars
- 2. pulls everything together
- 4. scientist who thought about why objects fall
- 6. how much matter the object is made of
- 9. what all the planets are in