The Earth Dimension (Super Mario 3D Galaxy)

The Earth Dimension is the first dimension that Mario visits in Super Mario 3-D Galaxy. It's very peaceful, with long stretches of grassy hills, bouncy blocks and small caverns. Very few Goombas. The main boss of this dimension is Iggy Koopa.
Once the player has beaten all the stages in a galaxy, the Bonus Challenge is unlocked.
== Galaxies ==
Galaxies 	Stars	Boss/Rival 	Stars Needed
Goomba Hills Galaxy 	
* The Adventure Begins
* Dino Dilemma
* King of the Hill
(Bonus) The Highest Score	King Goomba 	N/A
Blocky Heights Galaxy 	
* Giant Land
* Race Through The Sky
(Bonus) 100 Coins Challenge	Koopa the Quick	1 star
Cryptic Caverns Galaxy 	
* Mole Mountain
* Fiery Hollow	Major Burrows 	3 stars
Platform Panic Galaxy 	
*Spikey Skies	None 	7 stars
Mynaruff Galaxy 	 	 	7 stars
Large Egg Galaxy 	 	 	10 stars
Iggy's Fearsome Fortress	 	Iggy Koopa 	16 stars