Across
- 2. Someone who explores space.
- 4. People or things can be sucked into these.
- 7. A floating space rock.
- 8. These fly in space.
- 9. You look at these at night when you look into the sky.
- 11. The galaxy we live in.
Down
- 1. A small object that orbits one larger than it.
- 3. The system of planets orbiting a star Sol.
- 5. The path a planet takes around the sun.
- 6. A group of stars, gas and dust held together by gravity.
- 8. This provides heat and is really big.
- 10. What is Mars, Earth and Saturn?