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| Oa | |
|---|---|
&sq=Google&lang=en&file=File:Oa_(DC_Comics).jpg) Oa, with the Guardians of the Universe and the Green Lantern Corps. Art by Alex Ross. | |
| Characters | Guardians of the Universe Green Lantern Corps |
| Publisher | DC Comics |
Oa is a fictional planet that lies at the center of the DC Comics universe. Since its inception, Oa has been the planetary citadel of the Guardians of the Universe and headquarters of the Green Lantern Corps. It first appeared in Green Lantern (vol. 2) #1, when the Guardians summoned Hal Jordan's "energy duplicate" so they could hear of his origin.