Oa is a planet, and the home of the Green Lantern Corps. References Edit ↑ Weisman, Greg (writer) & Divar, Tim (director) (April 28, 2012). "Happy New Year". Young Justice. Season 2. Episode 1. Cartoon Network. Retrieved from "https://youngjustice.fandom.com/wiki/Oa?oldid=157162" Categories: A to Z Green Lantern Corps Planets Community content is available under CC-BY-SA unless otherwise noted.