From publisher blurb:
Across the Universe
Stargates opens up a vast universe of possibility for creating and designing your own system of gateways to bring interplanetary adventure to your campaign. From local system portals to intergalactic wormholes, you'll find within a detailed system for defining not just the basics like direction and range but mysterious manifestations of transmaterialization energies, the dangers of activating dormant or damaged gateways, including malfunctions like biomutation, psychic backlash, and temporal displacement! You can create unique gateway keys for conditions, patrons, and arcane, divine, and psychic magic and more, and you'll find sample gateways like the solar arch, priest's passage, and the Pillars of Qa, as well as specialized feats, spells, and more for making the most of gateways in your universe.