Question: NGC 1808 is a Seyfert galaxy located in the constellation Columba, The which astronomical event that occurs during the last stellar evolutionary stages of a massive star's life, whose dramatic and catastrophic destruction is marked by one final titanic explosion, 1993af appeared in NGC 1808?
Sentence (from "Supernova"): This causes the sudden appearance of a "new" bright star, before slowly fading from sight over several weeks or months.
Relevant evidence: No