World 2 (Super Mario Galaxy 2)

"Wow. Take a look at that! We found an entirely new world! Looks like there should be plenty of Power Stars here."

- Lubba

World 2: Shooting Through the Stars is second world featured in Super Mario Galaxy 2. It is located near a solar system different from Mario's, as the Mushroom World can't be seen (and Mario's solar system was already seen in Donkey Kong: Jungle Beat's Asteroid Belt level), however a very similar solar system was seen for a second during the ending of Super Mario Galaxy. In this world, there are many different galaxies. the last of which, Bowser's Lava Lair, features the first encounter with Bowser.

Galaxies

 * Puzzle Plank Galaxy
 * Hightail Falls Galaxy
 * Boulder Bowl Galaxy
 * Cosmic Cove Galaxy
 * Wild Glide Galaxy
 * Honeybloom Galaxy (Hungry Luma)
 * Bowser's Lava Lair

Trivia

 * The music played on this world's map is identical to World 1's music, until World 1's music is changed after green Prankster Comets appear later in the game.