lenticular galaxy in constellation Andromeda
via Wikipedia infobox
NGC 51 is a lenticular galaxy in the constellation Andromeda. It has a diameter of 90,000 light-years. The galaxy was discovered on September 7, 1885, by Lewis Swift, who described it as "Pretty faint, pretty small, round, brighter middle."
Supernova
Discovered by embedding cosine similarity (sentence-transformers MiniLM, 384-dim).