Butterfly Star Cluster

The Butterfly Star Cluster, also known as M6 or NGC 6405, lies 2,000 light-years away and is 20 light-years across. Visible even with binoculars—in a light-free location—the Butterfly Star Cluster is located toward the constellation Scorpius. Blue stars represent young stars, while orange stars represent the brightest. Distant open star clusters like these are used as reference sources by astronomers in calculating distances.

It was first recorded in 1654 by astronomer Giovanni Battista Hodierna, who named it after its vague resemblance to a butterfly. If you ask me, those who gave such names to constellations and nebulae must have had a rather sophisticated imagination to have made them resemble each other.