Pop Star
From Kirby Wiki
The geography and surrounding solar system of Pop Star are never clearly shown or explained, but there are features that remain fairly consistent. It is always star-shaped, with 2-3 rings encircling it. They can be either white, or more commonly red, green, and blue.
Despite it's star-shaped, yellow appearance in space, once through the atmosphere Pop Star has blue oceans and landmasses similar to Earth's. It's possible that something in the atmosphere reflects- or gives off- a yellow light to make it appear the way it does from space.
Pop Star has its own sun and moon (note that the sun orbits around Pop Star instead of the other way around). The plot of the Kirby Super Star subgame, Milky Way Wishes begins with the problem of the sun and the moon actually fighting.
[edit] In the Kirby Games
Pop Star's areas seem to be divided up into a series of small, star-shaped islands, though this varies from game to game. It's shown most clearly in Kirby no Kirakira Kizzu.
One of the main areas is Dream Land, where Kirby lives, and ruled by King Dedede. Many of the smaller levels in the series are within Dream Land.
There is also the Mirror World entrance which floats in the sky above it.
Other than that, the layout of Pop Star is confusing and has never been mapped out. Some areas are re-used from game to game, but their locations in relation to each other aren't clear. The same goes for other nearby stars. (It's best not to think about it too hard, really.)
[edit] In Kirby Super Star and Kirby Super Star Ultra
Every game except for Milky Way Wishes and some portions of Revenge of Meta Knight and Meta Knightmare Ultra take place in Pop Star. In Milky Way Wishes, the map of planets include Pop Star, at the leftmost corner. Also, in Megaton Punch, if you do a powerful punch that goes over about 160m, there will be a small animation which shows a fissure going through Pop Star.
[edit] In Kirby: Right Back at Ya!
Dream Land is also the main location of the series, and still ruled by King Dedede. However, it's on a peninsula instead of an island, and seems to be much smaller.
