Gold Leaf Galaxy

The Gold Leaf Galaxy is a galaxy in Super Mario Galaxy. The galaxy greatly resembles, and is basically a mirror of, the Honeyhive Galaxy, with even the exact same music, though it has an autumn environment and some changes such as the disappearance of a cave behind the waterfall and several more planets. Also, the watch tower is now an observatory and is found in another place. Cataquacks can be found here.

Starting Planet
This planet is almost identical to the honey hive galaxy's main planet but with a few differences. The planet is also always in autumn (or fall). In the first mission there are five blue star chips scattered across the planet that Mario must find. Thankfully, Mario is given hints by the star bunnies to where the star chips are. In the second mission, lots of blue Cataquacks that are owned by the bees cover the starting planet. In the third mission there is a huge tower called the observation deck. The tower is taken over by a Monty Mole in a bubble cannon called the Undergrunt Gunner.

Star Bunny Planet
This is a big wooden planet with several water pools with grates over them. There is a switch that can move the grates and make wooden pegs pop out of the ground.

Round Planet
This is a small wooden planet a small pool, a wiggler, and a cataquack. Mario must get the Cataquack to stand on its symbol and get it to launch Mario up to go to the next planet.

Square Planet
This is a small planet that looks a lot like the maze cube in the Gusty Garden Galaxy. Mario must also lead the Cataquack through the maze, get it to stand on its symbol and get it to launch Mario up to go to the next planet.

M Planet
This is a line shaped like an "M". It has three Cataquacks and Mario must get one of the Cataquacks to stand on the end of the planet and get it to launch Mario up to go to the next planet to proceed.

Cataquack Planet
This is a big round planet with a grass area, a dirt area, a pool area, two tall towers, and a floating flower garden. This is also most likely where the Cataquacks come from. The power star is at the end of the flower garden.

Star Bunnies on the Hunt
In this mission, several Star Bunnies are searching for blue star pieces. After Mario collects them all, they create a Pull Star path which allows the player to reach a planet where the player must catch another Star Bunny. After successfully catching it, Mario will receive a Power Star.

Cataquack To The Skies
The player has to use the Cataquacks to get higher jumps, and reach new planets. Bee Mushrooms will be used at the end as well.

When It Rains, It Pours
The Bees inform Mario that there is an Undergrunt Gunner on the top of the Gold Leaf Observatory. Using mainly Bee Mushrooms, Mario must reach the top of the observatory while avoiding the many rain clouds that have gathered. Once he reaches the top, he must defeat the Undergrunt Gunner for a Power Star.

Cosmic Mario/Luigi Forest Race
Similar to When it Rains, it Pours, but Mario is racing Cosmic Mario.

Purple Coins in the Woods
Mario must search Gold Leaf Galaxy in most of the area of When It Rains, It Pours for all 100 Purple Coins before the time limit finishes. The Bees help remind the player how many Purple Coins they should have by the time they talk to them, if it is less then the player has missed some and must backtrack, wasting valuable time.

The Bell on the Big Tree
There is a big tree in a corner of the galaxy's main planet that has a bubble machine at its base. While in the bubble, Mario must knock the bell on the tree with the Star Cursor and float around, collecting all the Musical Notes. Once all the notes are collected, a secret Power Star will appear.

Trivia

 * There is a planet in this galaxy which closely resembles the Puzzle Cube from the Gusty Garden Galaxy.
 * In Mario Kart Wii, there is a course called Maple Treeway in the Star Cup that closely resembles the Gold Leaf Galaxy.
 * There are Star Bits that assemble into an L to the left of the starting position, referring most likely to Luigi, in the same position mirror-wise as the Star Bits that assembled into an M, referring to Mario, to the right of the starting position in Honey Hive Galaxy.
 * The first tower on the Cataquack planet is shaped like Jenga blocks, but this is probably a coincidence.