Beacon

"“That ball of flame represents the power of the observatory. We call it the beacon. When you recover a Grand Star, a little Star Power will be restored, and the beacon will grow.”"

- Rosalina, Super Mario Galaxy

Beacon ​is an item placed in the Comet Observatory. It was used for all the Domes. When restoring a Grand Star, the colour of the Beacon changes; also the Dome lights up and it is now available to go inside.

Super Mario Galaxy
When each star is put in first star, it lights up and turns orange, adding another Grand Star once, it turns yellow, then green, greenish-blue, blue and finally, turquoise.

Super Mario Galaxy 2
In Starship Mario's engine room, it appears to be a miniature beacon that runs on Power Stars. The miniature beacon is the energy source for the starship. It is only coloured turquoise for the entire game.

Gallery
 Beacon.png|When 2 Grand Stars are put in.