Boo's Boneyard Galaxy

Boo's Boneyard Galaxy is a ghost-themed galaxy in Super Mario Galaxy. It is unlocked by feeding the Hungry Luma outside of the Gate 1200 Star Bits.

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

Starting planet
This planet is shaped like a giant skull and is surrounded by bones that Mario cannot access. Mario lands on the skull's lower jaw upon arriving at the galaxy. If he performs a Spin on the eyes of the skull, he will get three Star Bits. There is a single pipe which takes Mario to the Spooky Speedster Planet. The background environment seen in this area is based upon that from Ghostly Galaxy.

Spooky Speedster planet
This planet is a large maze-like race course where Mario races the Spooky Speedster for the second time. Through the underground tunnels, there is a river of flowing ghosts, as well as Banekiti, fans, and many skeletons (after the finish line). During the race, the tunnels can sometimes warp.

Missions
This galaxy contains only the following mission:

Names in other languages
Galassia Osso Duro Schattenpromenade-Galaxie