Cosmology (Mobius)

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Little Planet

Little Planet is a mysterious moon that orbits Mobius.

The Little Planet only appears for one month of every year, in the skies above Never Lake. The planet hosts the Time Stones, gems that have the mystical ability to control time.

Black Comet

A red/charcoal planetoid in the same solar system as Sonic's world, the Black Comet orbits the sun every 50 years. Prior to the events of the Black Arms attempt at using Shadow The Hedgehog as their pawn in world destruction, the appearance of the Black Comet in the sky was associated with a rather more merry "Fire in the Sky" celebration. However, it is in fact the home of the sinister Black Arms species. Whether the aliens actually evolved on this murky worldlet, or migrated to the comet from elsewhere, is never addressed, though Black Doom implies in Sky Troops that they have inhabited it for at least two millenia. The interior of the comet is largely hollowed out to accomodate the Black Arms; a nightmarish, otherworldly habitat with giant, writhing tentacles embedded in the walls, and poisonous crimson ooze filling entire caverns.

Fifty years ago, as Professor Gerald Robotnik was working on Project Shadow, the Black Comet passed close to Sonic's world and the Space Colony ARK. Black Doom made contact with Gerald and agreed to help in the Professor's research, offering some of his genetic material to create Shadow the Hedgehog (and possibly the Biolizard) - thereby making Shadow part Black Arms and fostering the emnity of the future G.U.N. Commander, who spied on the procedure as a child.

Orbiting back into the inner solar system after the events of Metal Sonic's attempt to enslave the world after going rouge from Eggman's control, the Black Arms launched a massive invasion of Sonic's world from the Black Comet, storming the United Federation. Black Doom attempted to use his genetic connection with Shadow, and knowledge of the hedgehog's past, as a means of controlling the Ultimate Lifeform to gather up the seven Chaos Emeralds. In the game's Last Story we learn why he needs the gems: Doom tells Shadow that the Black Comet's acceleration isn't sufficient to make it down to the planet's surface, but a seven-Emerald Chaos Control teleportation will do the trick instead. Warping down through the atmosphere, the Comet roots itself above a ruined city, apparently to facilitate the final, unstoppable phase of the Black Arms' global conquest.

Black Rock

The Black Rock is a mysterious asteroid which hovers around the planet around every five years, before disappearing after one week.

Death Egg

The Death Egg is a massive orbital fortress, constructed by Dr. Eggman. A true study in evil mega-engineering, the spherical space station resembles the face of Eggman himself, with concave eye-sockets, a nose and a moustache. Hosting some of the Doctor's most deadly creations of all time, this vast stronghold serves as the scientist's final base when he isn't using the Space Colony ARK or any other place to call his ultimate hideout.

Secret Zone

A pocket dimension which usually houses the Chaos Emeralds that constantly shifts to keep those unworthy of having the seven Chaos Emeralds out but those brave enough can take on it's challenges and be awarded one of the Chaos Emeralds.