I actually do think that M42, the first deep space object discovered [in 1610AD] is underrated. It is my favourite object in the sky. Bak in 2012 Astrophysisits discovered a black hole in M42, that the stars of the trapezium move fast around this black hole.
Massive Black Hole in Orion Nebula, Only ... - Sci-News.comhttp://www.sci-news.com › astronomy › article00693
https://apod.nasa.gov/apod/ap140408.html