Across
- 2. The molten material thrown out of a volcano
- 3. Natural satellite of the Earth
- 5. An instrument which helps to see clearly the heavenly bodies
- 7. An imaginary line about which a body rotates
- 8. The innermost layer of the Earth
- 9. The one half of the Earth
- 10. The planet with rings around it
Down
- 1. A body that moves around a planet
- 3. The smallest planet
- 4. The hole at the centre of the volcano
- 6. The path on which a planet moves