orion cygnus arm

Do The Milky Ways Arms Have Names?

Last night one of the children that visited the Observatory asked a question with an answer that I was unable to answer very clearly. She asked If the Milky Ways (our galaxy) arms had names. The answer is yes!:

The Perseus Arm
The Norma Arm
The Scutum-Centaurus Arm
The Carina-Sagittarius Arm
The Orion-Cygnus Arm (We are here!)