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.
None. No planet or dwarf planet contains stars.
To see how many stars and moons are in the planet
Planet of Twilight has 416 pages.
The Petrified Planet has 263 pages.
Shampoo Planet has 304 pages.
Planet Google has 275 pages.
Planet Simpson has 352 pages.
The Forgotten Planet has 177 pages.
The Planet of Youth has 71 pages.
Bikini Planet has 344 pages.
A Planet for the President has 256 pages.
The Planet Savers has 91 pages.