3rd green star. (Super Mario Galaxy)

[Pencil Thief]

I need to know where to get the third green star. I already have the one from Buoy Base and the one that Luigi recovers for you. Does anyone know where the third one is?

[Bandicoot]

Where did Luigi help you? doesn't matter, it's either Battlerock or Dusty Dune. Lemmie know if you need more specific than that.

[Pencil Thief]

Luigi helped me on Battlerock.

Thanks, I should be able to find it on Dusty Dune.

[The_Game_Master]

Be sure to look at the underside of planets. It's on the sunbaked tower thing. Their should be a hungry Luma.

It's before you get to the tower too.

[Civil Disobedient]

It's in the dusty dune galaxy. When you reach the floating platforms with the rocks rolling around in a circle, go underneath the first platform and feed the hungry luma. In the new pyramid planet just collect 5 silver stars.