Supernova

Supernova(超新星, Choushinsei)

About
Through forcing the star to undergo its final stages of evolution, it explodes in both an incredibly powerful and wide ranging blast, referred to as a supernova. The actual event is so powerful that it momentarily out-shines the whole galaxy, however, even with its reduction in size Yoh comments that if it had been real life it "would have disintegrated the Earth".