NON

NON is Earth/Nocandia's twin planet (despite existing far away from it). The process of evolution was similar to that of Nocandia, and as such, the unnamed alien species that live on the planet's surface are also similar to humans in build and biology. The planet itself and its inhabitants are a major plot point in Episode Emergent, and a very minor one in Episode ZS preceding it,

Civilization
The previously mentioned alien species came to be way earlier than humans did. As such, by the time humanity discovered fire, the inhabitans of NON were testing out galactic travel.

-more to come-