Across
- 3. hottest planet
- 5. closest to the sun
- 7. small planets
- 9. rocky solid
Down
- 1. gases the surroundings of everything
- 2. going around and object several times
- 4. the only known planet with life
- 6. red sand
- 8. orbiting something but closer to the thing it is orbiting
- 10. bumpy ground