Boo's Boneyard Galaxy

Boo's Boneyard Galaxy is a galaxy in Super Mario Galaxy. The only planet Mario encounters here is shaped like a skull. This planet has many large bones surrounding it and an orange pipe on its head. This pipe leads underground to the rest of the galaxy.

Skull Planet
This is the main and only planet surrounded by bones. On the inside is a large maze-like race course where Mario races the Spooky Speedster.

Racing the Spooky Speedster
To get the Power Star, Mario must race the Spooky Speedster for the second time. The race is very different this time, because Mario must be wearing a boo suit in order to participate. Walls obstruct Boo Mario's path as he descends, and they are only passable when he is invisible; there are also fans that blow Boo Mario so that he may go faster. This level is primarily side-scrolling. After beating the Speedster this time, another Power Star will appear.