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4 February, 18:05

How are the spiral arms of the milky way detected?

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  1. 4 February, 19:50
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    The spiral structure emerges when galactic clusters (open), H II regions and O & B type stars (young stars) are used as tracers. We know this to be true as other pinwheel galaxies exhibit the same patterns across these tracers as in the milky way.
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