The Green Lantern Corps, The Guardians of the Universe
First Appearance
Green Lantern (Vol. 2) #1 (August, 1960)
Center of the Universe
Points of Interest
The Hall of Great Service, The Foundry, Memorial Hall, Sciencells, Guy's Place,

Oa is a planet in the DC Universe and the headquarters of the Green Lantern Corps.


Ancient HistoryEdit

Very little is known about planet Oa before the Guardians of the Universe began inhabiting it following leaving their homeworld of Maltus, though some have claimed that Oa was the Guardians true homeworld. It revolves around the sun known as Sto-Oa, which translates as "The Light of Oa.  On this world, the Oan/Guardian scientist Krona preformed an experiment that lead to the creation of the dark anti-matter universe, which the Guardians have long spent trying to defend our universe against. Oa is a lifeless world save for the city created by the Guardians for themselves and the Green Lantern Corps that they would go on to create there and would serve as the central base of operations for the Corps.

Recent HistoryEdit

The planet acted as the headquarters of the Corps for hundreds of thousands of years until one of the Green Lanterns, Hal Jordan, possessed by the evil entity Parallax, killed the Guardians except one.  Parallax was then battled by the last Green Lantern Kyle Rayner, chosen after most of the other Lanterns where killed and defeated, and the ensuing battle ended with the destruction of the planet.

Sometime later, Hal Jordan's old friend Tom Malmaku recreated the planet using cosmic powers hidden within him.  In addition, he recharged the Central Power Battery and Kyle Rayner, who had been possessed by the powerful Ion entity, was able to resurrect the murdered Guardians of the Universe. The Guardians then reformed the Green Lantern Corps and Oa became their base of operations once more.  After attacks from the supervillain Superboy Prime and the predatory alien force known as the Spider Guild, the Guardians decided to create a planetwide armor around the planet and stronger defenses for the world.  After an assault from the army known as the Sinestro Corps, lead by a former Green Lantern, Oa was forced to double these defenses.  Those defenses were later weakened by Scar, a rogue Guardian who allied himself with the Black Lantern Corps, an army of the dead controlled by Nekron, the god of Death.

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