Editing Bowser's Galaxy Reactor

|image=[[File:SMG Center of the Universe.png|180px]][[File:Bowsers Galaxy Reactor.png|180px]]

|area=[[Comet Observatory]]

|unlock=Get 60 stars and complete [[Darkness on the Horizon]]

|missions=[[The Fate of the Universe]]

'''NOTE''': Unless otherwise noted, all names are unofficial.

===Starting Area===

[[File:Bowser Galaxy Reactor Gravity Spotlight.png|200px|thumb|The Starting Area, the Castle Wall]]

This is the first area that [[Mario]] encounters after entering the Warp Field inside Peach's Castle. The extensive vertical walls of this strange area appear to be part of a crumbling castle. This particular section of the level contains special [[gravity spotlight]]s which allow Mario to walk directly up the vertical walls when the gravity field of the spotlights is entered. Several [[Dry Bones]] also patrol the area, and can trip Mario if he is not careful.  

===Lava Planet===

[[File:Bowser Galaxy Reactor Lava Planet.png|200px|thumb|left|{{conjectural|Lava Planet|planet}}]]

This planet is the first of three-element planets that are encountered one after another. The planet itself is made completely of [[lava]], though it does have multiple steel platforms rising out of the lava, along with moving sections of cooled lava which form moving pathways across the diameter of the planet. The steel platforms on the planet will begin to sink down into the lava as soon as Mario sets foot on them. The only significant obstacles that Mario will face on this planet (aside from the sinking platforms) are [[Lava Bubble]]s and [[Lava Steam]]s. A few [[coin]]s can be found on certain parts of the planet, along with a [[1-Up Mushroom]].

===Sand Planet===

[[File:Bowser Galaxy Reactor Quicksand Planet.png|200px|thumb|left|{{conjectural|Sand Planet|planet}}]]

This planet also appears to be larger than the previous planet and is the last element planet, but is made of sand. To get across this planet, Mario must follow moving stone paths to avoid [[Fire Bar]]s and quicksand that results in instant death. In this sense, it is rather similar to the Lava Planet, as both planets involve a narrow, moving pathway with a deadly substance making up the remainder of the surface and fire-based obstacles. Three [[tornado]]es can also be found here, although they are of no use to Mario, for they only lead to his [[Game Over|death]].

===Lava and Water Planets===

[[File:SMG BGR Lava Water Planets.png|200px|thumb|{{conjectural|Lava and Water Planets|planets}}]]

These are two unreachable planets off to the side of the element planets. One is completely made of water, and the other is made of lava.

===Space Junk Area===

[[File:Bowser Galaxy Reactor Space Junk Area.png|200px|thumb|left|{{conjectural|Space Junk Area|area}}]]

These are blocks that float around space, but when Mario gets close to them, the glowing blocks begin to appear beneath Mario's feet, which forms a path for him to continue. If Mario stays on the platform for too long, it will disappear. He must also deal with alterations in the gravity's direction, and time his movements to avoid Firebars.

===Lava Tower Planet===

[[File:Bowser Galaxy Reactor Tower Planet.png|200px|thumb|{{conjectural|Lava Tower Planet|planet}}]]

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===Stairway===

[[File:SMG Bowser Galaxy Reactor Stairway.png|200px|thumb|left|The {{conjectural|Stairway|area}}]]

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===Bowser's Rock Planet===

[[File:SMG Bowser's Rock Planet.png|200px|thumb|{{conjectural|Bowser's Rock Planet|planet}}]]

This is the first planet is where the first stage of the final battle takes place. It has [[thorny flower|prickly plant]]s growing on the surface. Mario can have Bowser crush the plants to get Star Bits and coins.

===Bowser's Shell Planet===

[[File:SMG Bowser's Shell Planet.png|200px|thumb|left|{{conjectural|Bowser's Shell Planet|planet}}]]

This is the second planet where the second stage of the final battle takes place. It has [[thorny flower|prickly plant]]s and [[rubbery bulb]]s growing on the surface of it. Mario can have Bowser crush the prickly plants or spin the rubbery bulbs into the prickly plants to get Star Bits or coins.

===Galaxy Reactor===

[[File:Bowser Galaxy Reactor Galaxy Reactor.png|200px|thumb|{{conjectural|Galaxy Reactor|planet}}]]

This last planet is where the third and final stage of the final battle takes place. It has coin lamps and ice crystals containing coins on the surface. The reactor is surrounded by a sphere of lava that makes up the massive sun of Bowser's galaxy. The final Grand Star of the game is hidden inside the reactor. The sphere of lava, however, is not solid.

SMG Asset Model Lava Geyser.png|[[Lava Geyser]]s

SMG Bullet Bill.png|[[Bullet Bill]]s

SMG Thwomp Artwork.png|[[Thwomp]]s

SMG Asset Model Prickly Thorn Plant.png|[[Thorny flower|Prickly plant]]s