Bubble Blast Galaxy

The Bubble Blast Galaxy is a galaxy in Super Mario Galaxy. It is one of the three Trial Galaxies. This galaxy consists of a large maze made of electrical fences floating in space. Because there is little in the way of solid ground, it must be traversed via Bubble Blowing, Sling Stars, Launch Stars, and Pipes. There is a large black hole in the middle of the galaxy, so if Mario falls down, he will be killed.

Half 1
This is a large area with many electric fences and Amps through out the area. This area contains five parts; one for each yellow Star Chip that must be collected. It's pretty simple: all Mario has to do is avoid hitting the many electric fences and other obstacles while floating in a bubble and trying to collect yellow Star Chips and 1-Up Mushrooms. There is a yellow five-pointed platform in the center of the area, each point with a Warp Pipe that leads to one of the five areas.

Half 2
This half is similar but Mario must float through a maze to the power star while avoiding electric fences and bullet bills. The bullet bills will chase Mario through the level unless he dispatches them by making them run into something.

Rock and Sand Planets
These are two inaccessible planets that float above the galaxy. Mario only comes in contact with them when he flies into one of the ice crystals on the rock one while traveling to the second half.

Enemies

 * Bullet Bills
 * Amps
 * Fire Shooters
 * Mines

The Electric Labyrinth
Mario starts out on the central platform shaped like a star. Mario (or Luigi) has to collect five Star Chips in the pipes while Bubble Blowing to create a Launch Star.

In the next area, Mario has to blow the bubble while avoiding Bullet Bills to get the Power Star.