Across
- 4. one full orbit around another object
- 6. the force that tries to keep rockets from leaving Earth's atmosphere
- 8. a regular, repeating path that one object in space takes around another one
- 10. the force that the Earth has on the moon
- 12. this is at the center of our solar system
Down
- 1. a piece of rock or other matter from space that produces a bright light as it travels through the atmosphere(like a shooting star)
- 2. an icy, small Solar System body that release gases when passing close to the Sun
- 3. what the inner planets are made of
- 5. an orbit that is oval shaped
- 7. A relatively small, inactive, rocky body orbiting the sun, many are found between Mars and Jupiter
- 9. to spin on an axis
- 11. what the outer planets are made of