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PostPosted: April 11th, 2015, 7:28 pm 
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Joined: October 12th, 2009, 3:28 pm
Posts: 4155
Location: Baton Rouge, LA
I've never heard of this molecular gas band stretching outward from Antares. It lies 500 light-years away and apparently spans a good five degrees of sky.

The Dark River was the subject of the 22 February APOD...
http://apod.nasa.gov/apod/ap150222.html

Look at this neat, old annotated plate...
http://www.library.gatech.edu/Barnard_Project_W/platechart/platechart13.jpg


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