Stenn Gremm is an archaeologist who lives thousands of years in our future. Indeed, the ancient and dimly understood past of Stenn's day is our present.
For this story, I imagined a specific setting: an earth-like planet, with a large, ruddy moon dominating the sky. The moon, and the mythical figure that it represented, played a central role in life on this planet. To a visitor, the red light pervading the sky would emphasize the strangeness of the world. To the inhabitants, the stately 40-day phases of the moon measure out their time.
It's all very well and good to imagine such a place, but can it really exist? We can turn to the basic laws of motion worked out by Kepler for some answers.
Commonly in science fiction you'll find two main modes of interstellar travel. In the first, common to several well-known franchises on the big screen, ships are plentiful and swift, crossing between star systems within the attention span of the average theater-goer. It seems like everyone has an interstellar craft, as small as two-seater runabouts and small fighters. In the second, less common, model, ships are still limited to sub-light speeds and journeys require lifetimes, either using multi-generation ships or sleepers. In this genre there is virtually no interstellar commerce because it takes too long to be practical.