If by Gravity Place You Mean The Last Level Where Rosalina Says " I can take you to your special one " Then Get Through all the things " Fire, Ice, Space Junk, etc."
Then after you go in the warp star in the end Bowser appears kill him by spinning when he is vulnerable.
Hope this helped,
quickguy99
After you get 120 stars as Mario, beat Bowser in the Center of the Universe and then wait till the end of the credits, you will be notified that Luigi is unlocked and playable.
Giga bowser is not unlockable in Super Mario Galaxy. That character does not even exist in Super Mario Galaxy.
Yes and no. There is a new Super Mario Galaxy coming out called Super Mario Galaxy 2, but it is not called Bowser returns
Bowser is not a playable character.
Bowser and bowser jr.
no
No, neither are unlockable.
If you're talking about Bowser's final universe, then yes. Talk to Rosalina at any time you are on the Comet Observatory and she will ask you if you want to travel to the center of the universe. Answer yes, and she'll take you to the final level.
The games have no relation.
yeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeeessssssss??? what are you trying to ask????
bowser
you make bowser try and fall on that blue circle and then shake the controler when your by bowser