There are 9 planets all together, although, in 2006 loads of scientists had a meeting and decided to call the 9th planet(pluto) a dwarf planet.
I think tier is 11 planet
None. No planet or dwarf planet contains stars.
a star is a dying planet and a planet is a living star
Saturn is the second largest planet with many rings.
To see how many stars and moons are in the planet
There are no moons around the planet Mercury.
The Planet Savers has 91 pages.
Planet Google has 275 pages.
The Forgotten Planet has 177 pages.
Bikini Planet has 344 pages.
A Planet for the President has 256 pages.
Fifth Planet has 224 pages.