Across
- 4. The distance light travels in one year.
- 6. The star in the centre of our solar system.
- 8. Path taken by a satellite, planet or star moving around a larger body. Earth completes one orbit of the Sun every year.
- 9. The planet known for its rings.
Down
- 1. Collection of stars held together by gravity. Our galaxy is called the Milky Way.
- 2. The largest planet in our solar system.
- 3. Bodies which give out light, and which may have a solar system of planets.
- 5. Planet that orbits a star outside our solar system.
- 7. The number of planets in our solar system.