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
A Planet for the President has 256 pages.
Bikini Planet has 344 pages.
The Planet Savers has 91 pages.
A Patchwork Planet has 287 pages.
The Forgotten Planet has 177 pages.
The Shrouded Planet has 186 pages.
The Planet on the Table has 241 pages.
Fifth Planet has 224 pages.
Planet Google has 275 pages.
The Planet of Youth has 71 pages.