Illustrated backstory
Yet the story is not over. In their relentless explorations, falling just behind the speed of light, Terragens have encountered other, stranger things. Artifacts more mysterious than any before encountered, that baffle even the most sophisticated transapients. Signals from the stars beyond the range of exploration. Hints of vast cultures that dwell far around the curve of the galaxy, or in other galaxies, or move through the depths of space between the stars. Powers that may challenge Terragen civilization to its core, or transform it into something unrecognizable, or utterly destroy it.