Across
- 4. the star at the center of the solar system
- 5. a chemical element with an atomic number of 8
- 7. the sixth planet from the sun
- 9. we live on it
Down
- 1. the "milky way"
- 2. dwarf planet
- 3. 8 of these in our solar system
- 4. what shines in the sky at night
- 6. a state of matter that has no fixed shape or volume
- 8. sometimes called a "minor planet"