Across
- 2. a force of attraction between objects due to their masses ans distances apart
- 3. the cloud from which the solar system is formed
- 7. planets form the collisions and mergers of the rocky planetestimals
- 8. a small body from which a planet originated in the early stages of development of the solar system
- 9. where the central star, our sun, is formed
Down
- 1. planets that formed in the outer disk and have rocky or metallic cores and deep atmospheres or gas and ice
- 4. the law in which each planet orbit about the sun is a deformed circle or an ellipse
- 5. the inward force that causes an object to move in a circular path
- 6. the path that a body follows as it travels around another body in space