Gamma-ray shielding against bursters

[stevebowers]

Note that the Verifex event was set up rather cleverly by Anders so that the wavefront from the supernovas was first detected by a nearby system connected to the Wormhole Nexus, which allowed some warning to travel to more distant systems before the wavefront arrived. OA wormholes do allow a certain amount of information to travel faster than light, but they do not allow reversal of causality (the worlds affected by the wavefront could get advanced warning, but they could not act upon that information to prevent the explosion).