Nebula
The Horsehead Nebula, also known as Barnard 33
Horsehead Nebula, also known as Barnard 33, is a dark nebula located in the constellation Orion. It sits within the emission nebula IC 434, which is illuminated by the nearby star Sigma Orionis. The distinctive shape of the Horsehead Nebula resembles that of a horse's head, hence its name.
Medusa Nebula AKA Abell 21 and Sharpless 2-274.
The Medusa Nebula is a planetary nebula in the constellation of Gemini. It is also known as Abell 21 and Sharpless 2-274. It was originally discovered in 1955 by University of California, Los Angeles astronomer George O. Abell, who classified it as an old planetary