Across
- 4. Earth Mars Saturn
- 5. small as grains of sand
- 6. the 4th planet from the sun
- 8. not perfectly round
- 9. It is a nearly perfect ball of hot plasma
Down
- 1. the fifth in distance from the Sun
- 2. huge celestial bodies made mostly of hydrogen
- 3. four times wider than Earth
- 6. rocks from space
- 7. first planet to be discovered through a telescope