Science Fair Project Encyclopedia
Cygnus Arm
The Cygnus Arm or Outer Arm (labeled "+II") is one of four major spiral arms in the Milky Way galaxy, along with the Sagittarius Arm. The Outer Arm has a radius of 15.5 ± 2.8 kpc and lies outside the Perseus Arm. It is named after its proximity to the Cygnus constellation.
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Last updated: 05-21-2005 21:48:38
10-26-2009 08:16:03
The contents of this article is licensed from www.wikipedia.org under the GNU Free Documentation License. Click here to see the transparent copy and copyright details
The contents of this article is licensed from www.wikipedia.org under the GNU Free Documentation License. Click here to see the transparent copy and copyright details


