Slave Shield

A slave shield is a technology used by the Ur-Quan Kzer-Za on planets inhabited by a race which chose to be a fallow slave after having been defeated, per the Path of Now and Forever doctrine. It shields the planet from communication with the outside, and prevents anything from entering or leaving the planet's atmosphere. Powerful hyperwave broadcasters are still able to penetrate the shield however, and sufficiently sophisticated technology can break a slave shield. A slave shield gives a reddish glow to a planet when seen from the outside.