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Old 28-07-2013, 11:33 PM
LAW (Murphy)
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Join Date: May 2012
Location: Brisbane
Posts: 204
Yeah, I don't think NASA will be using my post to map spiral arm evolution but I was hoping to just give a basic idea. Given the simple nature of the question (and the complex nature of the answer) I picked cartoons over calculus to get the point across.
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