The Star Domain grants the domain-holder power over the stars. In their current form, the Stars are gateways leading to unknown realms. Gadabout caused these gates to glow with other-worldly light and he gave them a mild consciousness to watch the world below. He organized them into constellations and set them to move about the sky in order to act as signs to direct travelers.
Being a cooperative god, Gadabout is quite happy for any deity to create their own constellations in the sky, though each comes under his ultimate control.
Gadabout has also imbued an exarch, Panoptes, with the Star domain, grating the creature a degree of control over the domain only rivaled by his master. The star domain manifests itself in Panoptes in the form of pupil-less eyes covering his body, all of which radiate the same otherworldly light as the stars themselves.