Starry Skies is the second part of World 7 in Newer Super Mario Bros. Wii. It follows Sky Mountain and is accessible after completing 7-3: Beanstalk Ascent. Completing Starry Skies allows the players to access a Launch Star which will send them to Koopa Planet.
Starry Skies takes place in outer space. Worlds 7-4, 7-5 and 7-6, which take place in open space, feature reduced gravity resulting in the players jumping higher and falling more slowly. Worlds 7-7 and 7-8 take place in a "star haven," essentially a type of extraterrestrial forest. The latter two levels, along with the tower, castle and airship have normal gravity.
World 7-4: Spacedust Heap - an outer space level in which players must navigate floating platforms, many of which are surrounded by bubbles of water.
World 7-5: Asteroid Belt - an outer space level in which players must navigate rotating asteroids, many of which are covered in Amps which will zap the players.
7-Blue Switch: The Blue Switch Palace - the Blue ! Switch activates all Blue Bricks in the game allowing the players to reach locations they may not have been able to before.
World 7-6: Spintop Nebula - an outer space level in which players must navigate platforms which fall away as they are stepped upon. Amps and Spiky Topmen seek to hinder the players' progress.
7-8: Starfruit Garden
7-Castle: Novastar Castle
7-Airship: Spaceship Koopa