APOD 4.4

One-Armed Spiral Galaxy NGC 4725: http://apod.nasa.gov/apod/ap150416.html

Most spiral galaxies have two or more arms, but NGC 4725 only has one. The galaxy is composed of bluish, newborn star clusters and red tinted star forming regions with a single spira mirabilis winding out. NGC 4725 is over 100 thousand light-years across and is located 41 million light-years away in Coma Berenices. This photo is cool because you can also see another galaxy in the upper right corner.