Super Mario Galaxy 2/Sky Station Galaxy

Items in mission 1
In the first area, jump into the orange pipe to teleport to a cage at the other end of the planet. A green mushroom will be right next to you. Another one up can be found on top of the third set of rising platforms in the second area. This one is one of the easiest to get so you should not miss it. Three one up mushrooms can be obtained in the second area by running into all of the music notes after getting the large ? coin. Another one up mushroom can be found in the fourth area inside a crystal after passing through the first strip of mud. The comet medal can be found in the fourth area. When on the second strip of dirt, backflip onto one of the large moving gray platforms. The platform will ride you all the way to the comet medal. A red life mushroom can be found sitting in the open on the fifth area. It is important to get this before you fight the boss.

Star 1: Peewee Piranha's Temper Tantrum
Upon arriving the galaxy,go down the green warp pipe to teleport to the other side of the planet. Once on the other side, climb up the small hill and break the large crystal. Fall down the hole after destroying the crystal and you will appear on the roof of the house on the other side of the planet. The Luma on top of the roof will turn into a launch star which lets you proceed to the second area. Follow the path up the sets of yellow rising platforms until you find another Luma who will turn into a launch star. The third area is a small cluster of planets. Ride the small launch star which will send you flying into the large launch star. When you arrive at the fourth area, jump across the strips of mud until you find another Luma. Ride the launch star and you will land in the fifth area. proceed passed the checkpoint flag to the other side of the planet and ride the launch star to the boss area. To damage the boss, simply use your spin attack on its rear end seven times. This should not be very hard to accomplish since the boss will only occasionally jump out of the way. After defeating the boss, grab the shiny power star that it releases.

Star 2: Storming the Sky Fleet
Upon arriving at this galaxy, go down the warp pipe to appear on the underside of the planet. Spin against the bouncing bushes to defeat the Chain Chomps. The second Chomp clockwise from the warp pipe has a key to unlock the Luma Launch Star.

On the next planet, Bullet Bills will come toward you. Walk towards them and to the underside of the planet to find a doorway inside the glass. Confined to a two-dimensional puzzle, go right past the Mid-point Flag until you fall down (and around). Keep right to land on the platform above the Rock Shooter. Continue to the right, using the cogs to reach the Launch Star on the bottom right. There is also a time-trial warp above this platform.

Tag the Mid-point Flag and touch each one of the Question Blocks to turn them yellow. Pause at 6 to let the Bullet Bill pass. 6 7 5 4 8 2 3 1

Avoid your Clones on the next set of color-changing tiles to reveal the Launch Star. 11 12 13 14 10 -- -- 15 9 6  5  4 8  7  2  3       1

The next Mid-point Flag precedes a gauntlet of Bullet Bills. Avoid the mud in front of the second cannon and make your way toward the Star Bit path. Use the bouncing bushes to defeat the larger Piranha Plant and retrieve a Key to unlock the Power Star. Carefully retrace your steps down the path toward the Power Star.

Time-Trial Warp
Grab the Rainbow Mario power up and defeat all of the Rock Shooters. Collect the Star Bits and the Three 1UP Mushrooms.