OB association in Andromeda Galaxy
via Wikipedia infobox
NGC 206 is a bright star cloud in the Andromeda Galaxy, and the brightest star cloud in Andromeda when viewed from Earth. It was discovered by German-born English astronomer William Herschel in 1786 and possibly even two years earlier when he observed "a streak of milky nebulosity, horizontal, or part of the 31st Nebula."
Features
Discovered by embedding cosine similarity (sentence-transformers MiniLM, 384-dim).