Across
- 3. A system of stars, gas, and dust held together by gravity.
- 5. Earth's natural satellite.
- 6. A vehicle designed for space travel.
- 8. A vehicle used to travel into space.
- 9. A creature from another planet.
- 10. A celestial object with a tail of gas and dust.
Down
- 1. The star at the center of our solar system.
- 2. A large celestial body orbiting a star.
- 4. A person who travels to space.
- 7. Huge balls of gas that shine in the night sky.