Simple! Collect all the grand stars. GOOD LUCK!
Complete boulder bowl galaxy
It does once you unlock Yoshi in Yoshi Star Galaxy.
after you get the star 'The Perfect Run' in Grandmaster galaxy rosalina joins your ship.
Of course he doesn't, in Super Mario Galaxy Bowser junior tried to kill Mario with Megaleg,King Caliente, and a flying ship. I think he do\id more than that, but I'm not sure.
120 stars:Rosalina Reads her Luma children the story of the green stars 242 stars: she comes to your ship to thank you
Super Mario galaxy 2 is much less plot-based than it's prequel, super Mario galaxy. the basic storyline is that bowser has found a grand star and used it's power to become gigantic. after attacking Mario he flees to space where Mario is forced to chase him. when he is discovered by a group of lumas flying around on a planetoid-converted-spaceship, they help him to explore the universe to save peach.
beat the sunken ghost ship
it is Jonathan Jones
It has already came out and it is fun! You are on a space ship. [To me it it looks nothing like one] With Mario's face on it. You have worlds to complete to save Peach. I don't know what happens at the end end. There is a world you have to complete after you save her, but I have not completed it yet.
It begins when star bits fall on the Mushroom Kingdom. Mario is invited to have cake at Peach's castle. When Mario gets there, he meets a luma. This luma gave Mario the ability to spin! Mario goes to the castle. It turns out that Bowser has captured Peach! He escapes. Mario meets some other lumas who set off Mario to his first adventure. When you beat that galaxy, a luma called Lubba makes Mario the captain of his ship so he can rescue Peach. That sets off Mario to his adventures!
Well if you have 121 stars collected as Mario and Luigi on super Mario galaxy.Congratulations you have finished Super Mario Galaxy 100% wrongamundo --' actually, aftr you beat bowser(AGAIN) you will be back at the spaceship.now, u have to do EVERY mission again.but, now looking for green stars, that are HIDDEN throughout the level.yay? no, its HELL to get'em.good luck o that, i only got 126 stars(normal and green) '-'
Actually, Rosalina Debuted in Super Mario Galaxy, where she was quite the opposite of evil. She guides Mario/Luigi through space and once they collect enough power stars to fuel the ship, she and her Lumas help defeat Bowser and rescue Peach, as well as save the Galaxy.