How many arms does The Milky Way have?

By The Christian Science Monitor
Wednesday, December 18, 2013 17:05 EDT
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An artist's impression shows how common planets are around the stars in the Milky Way. (AFP Photo)
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How many arms does The Milky Way have? (via The Christian Science Monitor)

How we draw the Milky Way, seen above over Mississippi, has changed multiple times over the last few decades. (David Swanson/Philadelphia Inquirer/AP) First, the Milky Way galaxy had four arms. Then, it had two, plus a number of fainter and slighter…

[Image via Agence France-Presse]

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