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[[Image:Milky_Way_Spiral_Arms.png|250px|right|thumb|Observed structure of the Milky Way's spiral arms]]
The '''Sagittarius Arm''' (also known as ''Sagittarius-Carina Arm''; labeled "-I") is one of the [[spiral arm]]s of our home [[galaxy]], the [[Milky Way]]. Each spiral arm is a long, diffuse curving streamer of [[stars]] that radiates out from the [[galactic center]]. These gigantic structures are often composed of billions of stars, and Sagittarius is one of the largest arms in our galaxy.
The Milky Way is a [[barred spiral galaxy]], consisting of a central crossbar from which several spiral arms radiate outwards. The Sagittarius Arm's innermost end connects to one of the ends of this central bar, making it one of the two major spiral arms of the galaxy. The other large arm is the [[Cygnus Arm]].
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