At least one supernova occurs per decade in our galaxy.银河系每十年至少有一颗超新星出现。The chances of a planet surviving a supernova always looked terribly slim.行星躲过超新星爆发的几率总是十分渺茫。Some supernova researchers wondered if it might be just a nine-day wonder.有些超新星研究者怀疑，这可能只是昙花一现。