New Research Affirms That Milky Way Has Four Spiral Arms

A study in the U.K. reaffirms a view of our galaxy held in the 1950s that was later challenged by images from the Spitzer Space Telescope.

Source: http://www.npr.org/blogs/thetwo-way/2013/12/17/252107695/new-research-affirms-that-milky-way-has-four-spiral-arms?ft=1&f=1007

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