Across
- 4. Flies around (orbits) the Earth.
- 6. Yuri, the first man in space.
- 7. A planet with nine rings made of rock and ice.
Down
- 1. The biggest planet.
- 2. A rock with a "tail".
- 3. Planet that's closest to the sun.
- 4. The start in the centre of our solar system
- 5. The planet where people live.