you get every other star and get 100 purple coins on the new galaxy.
Try for the 122nd star, or just play on any level you want.
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
you collect all the stars and then you go beat Bowser again and view a different ending and you get the Grand Finale Galaxy and you can get the 121st star. I'm not shure where the entrance is post if found
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.