Why is the moon a moon and not a planet?

Related questions

1. Can the flag on the moon be seen?
2. What was the first turn based RPG?
3. Is there a volcano on the moon?
4. How do you make great balls?
5. What could you mine on the moon?
6. What is the difference between an RPG and a bazooka?
7. Is there lava on the moon?
8. Does the moon have diamonds?
9. What is the closest planet to Earth today?

Tags

1. #about
2. #mercury
3. #saturn
4. #solar
5. #orbit
6. #unusually
7. #small
8. #planets
9. #large
10. #system
11. #earth
12. #moons
13. #planet
14. #there
15. #jupiter
16. #while
17. #around
18. #giants
19. #venus
20. #compared