Hurry, He's Hungry
From the Super Mario Wiki, the Mario encyclopedia
Making their way to the cannon, the player will find a Hungry Luma next to it. The Hungry Luma will ask the player to feed it forty Star Bits, which can be collected around the Sea Slide Galaxy. After obliging, the Hungry Luma will transform into a planet made out of Shrinking Tiles, which the player can reach by using the cannon. Upon landing on the planet, notes will appear on each of the tiles and the player needs to collect them all as the platforms disappear underneath them. Collecting all of the notes will cause the black hole in the middle of the planet to disappear and the Power Star will appear in its place.
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