Across
- 4. The earth ______ on it's axis.
- 5. smallest planet
- 6. planets circle the earth
- 9. largest planet
- 10. The shortened name of the international space station
Down
- 1. The further away from the sun, the _______ it takes to orbit the sun.
- 2. scientist who used a telescope to support the heliocentric model
- 3. planets circle the sun
- 7. the only planet in the solar system on which life is known to exist
- 8. the star at the center of our solar system that all planets rotate around