World 6 (Super Mario Galaxy 2)

World 6 : Bowser in Your Sights is the sixth world featured in Super Mario Galaxy 2. It is located near a Black Hole and at the center of the universe. It holds seven galaxies, the last of which, Bowser's Galaxy Generator, features the third and last encounter with Giant Bowser.

Galaxies

 * Melty Monster Galaxy
 * Clockwork Ruins Galaxy
 * Throwback Galaxy
 * Battle Belt Galaxy
 * Flash Black Galaxy (Hungry Luma)
 * Slimy Spring Galaxy
 * Bowser's Galaxy Generator

Trivia

 * The music that plays in the background of this world is a slowed-down version of the music that plays during the Bowser battles in this game.