Across
- 2. A rock hurtling through space towards a planet
- 4. First planet from the sun
- 5. The only planet that can support life
- 6. The hottest planet in the solar system
- 8. Something unlike anything on Earth
Down
- 1. A layer of gasses above a planet that traps heat
- 3. Earth-like in some way
- 4. A rocky satellite that orbits a planet
- 7. The Roman god of war
- 9. The ball of burning gas that all planets orbit around