NASA's Chandra X-ray Observatory originally shared:
Take a moment to learn something new about our very own Milky Way!
(Larger version here: http://chandra.si.edu/resources/illustrations/infographics.html)
(Larger version here: http://chandra.si.edu/resources/illustrations/infographics.html)
» see original post https://plus.google.com/116000959328274308893/posts/dRrdYKEiG22
Zazzle Space Gifts for every occasion
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