The Sweet Sweet Galaxy is a galaxy in Super Mario Galaxy. It appears after the Hungry Luma next to the Terrace has been fed 400 Star Bits. It features moving platforms with cookie cutter-shaped holes in them and appears to be made up primarily of titanic sweets and desserts. If Mario falls through a hole he will fall into a Black Hole. The stage also has electric barriers which have to be jumped over; if Mario touches one, he will get stunned temporarily and lose one point of health. Not only that, but there's a good chance he will fall through a hole after touching an electric barrier as it is on a moving platform.
The music of the Sweet Sweet Galaxy is a remix of the second overworld theme from Super Mario Bros. 3.
Mario has to run and jump forward while avoiding holes and electric barriers until he gets to the cake with the Power Star on top of it.