Across
- 4. _ is the closest planet to the sun
- 6. There is eight _
- 7. The _ is the hottest planet
- 9. _ Armstrong was the first man on the moon
- 10. _ is the only planet with oxygen
- 11. _ is a dwarf planet
Down
- 1. The sun is a _
- 2. Earth is the fifth largest planet in the _ system
- 3. _ is the coldest planet
- 5. there is no oxygen in _
- 8. Many planets _ around the sun
