Across
- 3. Kepler's 3rd law of _____; states that planets closer to the sun have smaller orbits than those farther away.
- 7. describes gas planets like: Saturn, Neptune, and Uranus
- 8. used to describe solid planets like: Venus, Earth, and Mars
- 9. the true center of two objects
- 10. A measure of how squished an ellipse is
- 11. Used to measure distance in space
- 13. A spinning mass of gas and dust, found in space
Down
- 1. The early stage in a star's formation; Formed during fusion .
- 2. The early stages in a planet's formation; formed during accretion
- 4. A theory to describe how the solar system was created; collapse, flattening, fusion, accretion
- 5. the creator of Kepler's laws (hint: first and last name)
- 6. Kepler's 2nd law of _____; states the sections that define an orbit are always equal in both areas and time.
- 12. Kepler's 1st law of _____; states all planets move around the sun in an ellipse.