Across
- 2. what is the milky way
- 4. what planet spins the opposite way to earth
- 6. what heats the earth
- 7. what is the opposite inner
- 8. what is the biggest planet in our solar system
- 9. what is the planet that we live in
Down
- 1. what is the red planet
- 3. what is the opposite of outer
- 5. what is the coldest planet
- 6. what is the second biggest in our solar system