- "Arcturus is a red sun."
- —J'onn J'onzz to Alex Danvers[src]
Arcturus was a red sun that had Maaldoria in its orbit.
History
When Supergirl and Mon-El accidentally traveled to Maaldoria, the latter realized that the planet's red sun, Arcturus, rendered them powerless.[1]
It was supposedly destroyed when the universe of Earth-38 was hit by a wave of antimatter during the Anti-Monitor Crisis.[2]