use the tri-luma warp star in the observatry...there is a fourth green luma!
get all 120 stars with Mario then luigi will be unlocked do it again with him a new galacy will apear then get all 100 purple coins on it to get the final star.
get all 100 coin stars at the castle where the star is at the door
OK
There is no star mushroom in Super Mario Galaxy 2.
You can't get the red star in super mario galaxy 2
The same as on Super Mario Galaxy 1.
The star from super Mario galaxy is called a luma.
The "star" that floats next to Rosalina is called a 'Luma' the Lumas are from Super Mario Galaxy. And Super Mario Galaxy
It does once you unlock Yoshi in Yoshi Star Galaxy.
in the gateway galaxy
The Red Star powerup from Super Mario Galaxy is not in the sequel.
"Lumas" Source: Super Mario galaxy
You get every green star.
NO!!!! YOU CAN NOT GET SUPER MARIO GALXY ON DS THAT MAKES NO CENTS SORRY BUDDY GOOD LUCK TAKE THE SUPER MARIO GALAXY DISK AND PUT IT IN YO WII CAUSE SUPER MARIO GALAXY DS IS A HOAX
you get every other star and get 100 purple coins on the new galaxy.