Meteor

Meteors are rocks that fly through space. Meteors are featured prominently in Super Mario Galaxy and Super Mario Galaxy 2, where they sometimes crash into planets. If hit Mario (or Luigi) will take damage so they should be avoided at all cost. In Super Mario Galaxy, some of the galaxies they appear in are Bowser Jr.'s Lava Reactor, where they fall from the sky during the final part of the battle with King Kaliente, and Melty Molten Galaxy in the mission "Through the Meteor Storm", where they rain during the entire mission.