Knights of the Stellar Void
It is the Second Age of Space. The light of human civilization flickered and threatened to die under the burden of strife and civil war, but burns bright again with contact with the thousand worlds of space. Space is not a mere void but a road to thousands of systems, endless planets ripe for colonization, exploration, exploitation.
You are lesser nobles, merchant princes of the New Commonality, the command crew of a starship sent forth with orders to explore, trade, make contact with new species, investigate worlds both old and new, find lost technological relics, defend the New Commonality, and most of all, profit.
See here to download a free 46-page Mindjammer preview document. It includes a general overview of the world, system, genotypes, spaceships, planets, and more.