I guess I can wipe gamma ray burst off my to be feared list. I was somehow under the impression that if we got swept it was all over. I'm sure distance matters. 'Though they last mere seconds, GRBs produce as much energy as the Sun will emit during its entire lifetime.' https://www.independent.co.uk/space/explosion-universe-grb-gamma-ray-burst-solar-system-b2311155.html