Proxima Centauri (planet)

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You may be looking for the star system.

Proxima Centauri was a planet in the Crab Galaxy. Kragg was a native of Proxima Centauri. (COMIC: Ride to Nowhere)

The Black Cauldron of Proxima Centauri was involved in the Ghost Wars of the Horsehead Nebula. (PROSE: The Bloodletters)