Comet Observatory

The cosmic home of Rosalina and the Lumas, pulsing with the power of collected stars.

The Comet Observatory serves as the central hub world in Super Mario Galaxy, acting as a mobile base for Rosalina and her family of Lumas. Created by Yoshiaki Koizumi and debuted in 2007, this space station functions as the primary staging ground where players collect Power Stars to aid Mario's quest against Bowser. Unlike later appearances where it is merely an unlockable area, here it is the heart of the game's narrative, housing Rosalina's Storybook which reveals her tragic backstory. It transforms into a comet itself to transport Mario to the center of the universe once enough stars are gathered.

Quick Facts

Game: Super Mario Galaxy
Theme: Space and Stars

Lore & Background

In Super Mario Galaxy, Bowser steals Princess Peach's castle and attacks the Comet Observatory, seizing its fuel source: Power Stars. Rosalina resides here as the adoptive mother of the Lumas and watcher of the cosmos. A storybook found within details her origin: a girl who lost her mother and traveled through space to help a lost Luma find its parents, eventually gathering other Lumas to build this observatory as their home. The narrative explains that when Bowser's galaxy collapses into a supermassive black hole at the game's climax, all of Rosalina's Lumas throw themselves into it to stop the destruction. Implicit in her explanation to Mario is the concept of rebirth, where the universe and stars are destined to be born again.

Reader's Guide

To access the full capabilities of the Comet Observatory in Super Mario Galaxy, players must collect 120 Power Stars. This unlocks a special story segment where Rosalina tells the tale of the "Green Stars," opening additional optional missions. In Super Mario Galaxy 2, a shadowy form resembling her, known as the Cosmic Spirit, appears to assist after multiple deaths. She also sends letters containing 50 Star Bits to Baby Luma to grant Mario a spin attack. The observatory remains accessible throughout these titles, serving as the hub where players can return to hear stories or receive rewards, distinct from its role in Super Mario Odyssey where she only appears as an 8-bit sprite on the Dark and Darker Side of the Moon.