Boo's Boneyard Galaxy

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

Racing the Spooky Speedster
To get the Power Star, Mario must race the Spooky Speedster for the second time. The race is much different this time, because Mario must be wearing a boo suit in order to participate. This level is primarily side-scrolling. After beating the Speedster again, another Power Star will appear.