Across
- 4. Fourth planet from the sun
- 5. Once a planet, now just a dwarf planet
- 6. The explosion at the start of the universe
- 8. Pattern of stars in the sky
- 10. A collection of stars
Down
- 1. Largest planet in the solar system
- 2. Venus, Mercury and Saturn are all one
- 3. A really big star explosion
- 4. Closest planet to the sun
- 7. NASA's moon missions are all named after this God
- 9. The star in the centre of our solar system