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A comment on New class of galaxy has been discovered, made almost entirely of dark matter. Parent comment

Re:New class of galaxy has been discovered, made almost enti... by fizx on Friday August 26, 2016 @03:01PM (#12368488)
We're kind of out on the edge of the galaxy. As you might suspect, dark matter tends to be more dense in the middle of the galaxy.

I'll let someone else be more precise:

http://cdms.berkeley.edu/Education/DMpages/FAQ/question36.ht...

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