Across
- 2. an imaginary straight line on which an object rotates
- 5. dense, small, rocky planets close to the sun
- 8. something that revolves around a larger object
- 9. a small body of rock, ice, and dust with a tail of gas and dust
Down
- 1. a rock that orbits the Sun
- 3. a big bright ball of gas
- 4. gases surrounding a planet
- 6. spinning on an axis
- 7. a large sphere with a clear orbit around a star
- 10. path around another object due to gravity