Perseus Arm
The Perseus Arm is one of two major spiral arms of the Milky Way galaxy. The second major arm is called the Scutum–Centaurus Arm.[1]
The Milky Way is a barred spiral galaxy with two major arms and a number of minor arms or spurs.[1] The Perseus Spiral Arm, with a radius of about 10,700 parsecs, is between the minor Cygnus and Carina–Sagittarius Arms.[1] It is so named because it is seen in the same direction as the constellation Perseus.
The local spur known as the Orion–Cygnus Arm, which includes the Solar System and Earth, may be a branch of the Perseus Arm, but this is unconfirmed.[1]
The Perseus Spiral arm contains a number of Messier objects:
It also contains a star 100 times larger than the sun. AC130
