Bowser's Dark Matter Plant

"There are a bunch of traps here too! Just be careful of the gravity."

- Luma

Bowser's Dark Matter Plant (or Bowser's Dark Matter Reactor in the Prima Guide), is one of Bowser's galaxies in the game Super Mario Galaxy. This galaxy has two gravity-flipping areas, along with patches of dark matter which are deadly to touch.

Planets/Areas
NOTE: Unless otherwise noted, all names are unofficial.

Starting Planet
The planet is a huge plant that makes dark matter. If Mario touches the dark matter, he instantly disintegrates. The plant has two main sections. In the first one there are many moving platforms across some dark matter and a 2D area with many gravity changes that Mario must cross, and a secret area above it all with a ? Block. The second part has many of the same things but there are moving gaps caused by dark matter in the platforms and a 2D gravity section surrounded by dark matter and small black holes.

Stairs
These are just stairs that lead to Bowser. There are two Lumas trapped in ice crystals that Mario must free to move on, as well as a crystallized Life Mushroom on the second platform.

Dark Matter Reactor
This is the planet where Mario fights Bowser for the second time. It is also where the dark matter is created. There are ice crystals and green plates that, when smashed, leave coins. Also, the ice crystals can be used to block Bowser's fireballs and the green plates can be used to block the shock waves Bowser makes, but neither can protect Mario from Bowser's new Dark Spin attack.

Missions
This galaxy consists of only the following mission.

Trivia

 * This is the only boss level of Super Mario Galaxy that the "Plant" part of the name was not changed in English from the Japanese game. It was changed to "Reactor" in most of the other levels, and to "Armada" in Bowser Jr.'s Airship Armada.