In Super Mario Galaxy, Where is Luigi when he finds a star?

I got the game yesterday but when luigi sends you a letter that he found a star, he says he's trapped though. I can't fin out what galaxy he's in. ( Just to let you know, this is the 2nd time he sent me a letter. the picture shows he's upside down. also near where he is, there is those electric things. If you know all the locations where luigi is lost, please tell where.In Super Mario Galaxy, Where is Luigi when he finds a star?
Go to the Battlerock Galaxy. On the Mission Select screen, you'll see a star with a question mark on it. That's the mission you want. You'll find Luigi towards at the end of the level, under the platform where you found the star last time you did the mission. Like when you first completed the level, you'll need to lure a Bullet Bill towards the shields that's holding Luigi captive. Note that if you haven't cleared this mission previously, you may need to clear the mission first before Luigi appears.



Hope this helps!In Super Mario Galaxy, Where is Luigi when he finds a star?
BATTLEROCK GALAXY.....END OF THE LEVEL.......GET A BULLET BILL TO BREAK HIM FREE