Dusty Dune Galaxy

The Dusty Dune Galaxy (also called Dusty Desert ) is a galaxy in Super Mario Galaxy, accessed via the Bedroom. A desert-themed location, it mostly consists of planets covered in yellow sand and quicksand, as well as references to stereotypical desert sights such as cacti and Egyptian pyramid-shaped planets and tornadoes. Also owning to its theme, the main enemies found in Dusty Dune Galaxy are Dry Bones and Bone Twisters.

This galaxy is tied with the Battlerock Galaxy for the most number of Power Stars in the game, with a total of seven.

Planets/Areas
NOTE: Unless otherwise noted, all names are unofficial.

Starting Planet
This is a very large quicksand planet with several pyramids, stone platforms, many tornadoes, and a few huge dark sand pits. On one side of the planet, there is a very tall tower with a waterfall of sand pouring down the side. Mario must scale this tower to get to the Power Star for the mission Soaring on the Desert Winds. There is also an underground tunnel with Piranha Plants that are hanging upside down, Thwomps, currents of sand that can force the player back, and a large boulder that can be destroyed by Fire Mario. This tunnel is the only way between the beginning and the tower. It is possible to defeat the Piranha Plants that are hanging upside down by stepping on them. This can be done by jumping and aiming carefully for their necks.

Ring Planet
This planet is a small stone ring surrounded by four small platforms. Four boulders can be found rolling around the ring. On the underside of the largest platform is a Hungry Luma and a few Crystals with Coins and Star Bits. A Rainbow Star can be found on the underside of the middle platform, and a Life Mushroom can be found on the underside of a smaller platform. If the Hungry Luma is fed, it will transform into the Pyramid Planet.

Speedy Sand Planets
These three stone planets each consist of stone boulders connected by fast sand currents that move Mario when he stands in them. The first planet is shaped like a slightly curved tube, the second is a ring, and the third is a sphere. On the second planet, there are five blue Star Chips that Mario must collect in order to progress. There is a Warp Pipe on the surface of the third planet that leads to the interior and a shortcut to the Maze Planet.

Maze Planet
This planet is a disk of quicksand with a two-sided maze. One side is tan and the other is gray. This planet features tornadoes, Dry Bones, a Thwomp, and a reversible tower that must be used for the mission Blasting through the Sand and its Speed Run. This is also the planet on which the mission Purple Coins in the Desert takes place. Captain Toad and the Toad Brigade can be found scattered around this planet during the purple coin mission.

Disk Planets
There are two disk planets. One has a rising and sinking tower on one side and a sinking glass tower on the other side. The other disk has a rising and sinking tower with a Bullet Bill blaster on one side while the other side is barren with falling blocks.

Sand Tide Planet
This planet is a small planet with several cones on it. The planet also expands and shrinks slowly. This planet has many Crabbers, a giant prickly plant, and several coconuts. A stump with three coins above it is revealed when the sand lowers. There is another stump on this planet that when pounded, will cause music notes to appear. If all the music notes are collected, a Sling Star will appear taking the player to one of the disk planets. This is necessary to complete to get the hidden star, Bullet Bill on Your Back.

Pokey Planets
These are two small planets with a Pokeynut on the northern one and tons of coconuts on the southern one. The player needs to defeat the Pokeynut by spinning to throw the coconuts found on the planet. Then, a Launch Star will appear, taking Mario to the next planet.

Pyramid Planets
There are two double-sided pyramid planets. One is not accessible and not solid, while the other is after Mario feeds a Hungry Luma with twenty Star Bits. On the inside of the accessible side lies a maze of rising and falling sand that Mario can access when he enters a Warp Pipe (although it'll close once Mario makes his way inside, trapping him in there until the mission is completed). Here, Mario must find five Silver Stars, which will make a Green Star appear. This planet can only be accessed after feeding the Hungry Luma. The player can raise or lower the sand by stepping on some green platforms found in the area. The player must collect all the Silver Stars without being crushed. Once all the Silver Stars are collected, most of the sand will drain out of the pyramid, and the Green Star will reveal itself.

Cacti Planets
There are large cacti that can be seen, but are not solid or accessible.

Trivia

 * If the player goes into first-person view on a certain spot on the sinking tower planet, the player can see a Launch Star hovering between two pyramids. It can only be used by a flying hack. If the player does use it, it will lead back to the sinking tower planet.
 * There is also a second unused Launch Star floating in mid-air that is visible in the first mission. This star takes players to the final planet in the second mission.
 * The portion of Dusty Dune Galaxy's theme right before it loops sounds similar to the Coin Heaven theme from Super Mario Bros. 3.
 * Along with the Melty Molten Galaxy, this is the only galaxy to play the hurry theme in a non-comet mission.