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 "NGC 375"): It was discovered on September 12, 1784 by William Herschel.
Relevant evidence: No