Across
- 1. what is the hottest planet
- 3. what is the biggest planet
- 4. nor venus which two planets have no moons
- 6. how many planets are in our solar system
- 7. formed around 4.6 billion years ago
- 9. how many times is the sun than the earth
- 10. how long does it take for mercury to orbit
- 12. what is the smallest planet
Down
- 2. who is the first man to walk on the moon
- 5. Scuti what is the biggest star
- 8. how far is the earth tilted on it's axis
- 11. many stars are in the milky way