From publisher blurb:
Black holes, black markets, and a black-hearted librarian haunt the spaceways of the Muinmos system. The immense space station known as Branch Library 67-128TT has been tasked with the study of local astrological phenomena. But rogue scholars, in defiance of the mandates from their patron Great Library, secretly study the pre-spacefaring race on the planet below. Secret plots, alien societies, and a corrupt bureaucracy await, all in orbit around the yellow-orange dwarf star known as Muinmos.
Star System Sets offer new planets to explore, dangers to overcome, lifeforms to study, and cultures to document. Modular enough for any campaign, each double-sided card presents a complete ruleset for ease of reference, allowing GMs to fill in the blank spots on their star charts.
Card types include Race, Planet, Character Options, Equipment, Monsters, and Mini-Adventure. Each set is available à la carte or as a six-card bundle.