Across
- 2. Proposed that Earth and the other planets revolve around the Sun.
- 3. Example of a dwarf planet.
- 6. Movement of an object on its own axis.
- 10. Discovered that planet's orbits are ellipses, not circles.
- 11. belt Located between Mars and Jupiter.
- 12. Largest object in the solar system.
Down
- 1. Movement of an object around the Sun.
- 4. ''Planet'' comes from the Greek word...
- 5. Pulls the planets and keeps them moving around the Sun.
- 7. Object that orbits the Sun and has a nearly spherical shape.
- 8. Process that produces a large amount of
- 9. Moves around the sun in an oval-shape orbit.