From publisher blurb:
Faster-than-light travel has finally allowed humanity to spread beyond its lonely corner of the Milky Way. In the depths of space these explorers found millions of star systems, strange planets, and exotic alien races. Centuries later, they form the Known Worlds, a vital region of trade and technology where empires grow and business thrives.
It is an unparalleled age. Cutting edge science has opened limitless frontiers of space and consciousness, and has even begun to hint at the mysteries of the universe itself. But to find them, one must travel beyond the familiar, to the last parsecs of reality.
This Primer paves the way for an expanded core book to come!