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The Orion's Arm Universe Project Forums > Offtopics and Extras; Other Cool Stuff > Real Life But OA Relevant > Orions Arm: not a spur
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Cray

09-30-2016, 01:33 AM
The Orion spur appears to be more of a complete arm.
http://www.csmonitor.com/Science/2016/09...ly-thought

stevebowers

09-30-2016, 01:55 AM
Looks to me like there is both a local arm and a smaller spur between us and the Sagittarius arm, defined by these new maser sources (blue circles).
[Image: F2.large.jpg?width=800&height=600&carousel=1]
The Orion's Arm Universe Project Forums > Offtopics and Extras; Other Cool Stuff > Real Life But OA Relevant > Orions Arm: not a spur