NGC 1931 has been referred to as a "Miniature version of the Orion Nebula", and I suppose it does have some of the same characteristics. It is a mixed emission-reflection nebula, and contains a smaller version of the Trapezium in it's hot young star cluster centered in the emission nebula. The entire cluster/nebula complex is only about 3 arcmin in size. The distance from earth is estimated at about 7000 light years.
