Across
- 4. A body that gives out light.
- 5. The path that all planets take around the Sun.
- 6. A planet that orbits a star outside our Solar System.
Down
- 1. A body that orbits a planet.
- 2. Made up of billions of galaxies.
- 3. The Sun and planets and other bodies in orbit around it.
- 4. Collection of stars held together by gravity.
