Across
- 4. composed of dust and rock
- 7. a cosmological model in which the sun is assumed to lie at or near a central point
- 8. a piece of rock similar to the material formed into planets
- 9. Planet or a machine that orbits a planet or star
- 10. the sun is made out of it
Down
- 1. a radical and pervasive change in the society and the social structure
- 2. pluto was defined as this
- 3. a space rock that is still in space
- 5. the orbit of Earth around the Sun
- 6. considered harmless