Messier 78 is a reflection nebula in the constellation of Orion, located 1.350 light-years away. It was discovered by Pierre Mechain in 1780 and included by Charles Messier in his catal...
NGC 6188 is an emission nebula located about 4,000 light years away in the constellation Ara. The bright open cluster NGC 6193, visible to the naked eye, is responsible for a region of ...