What makes a spiral galaxy, well, spiral? And how long does it take them to get in a spin? Continue reading →
via Discovery News http://news.discovery.com/space/galaxies/when-did-galaxies-get-their-spirals-131230.htm#mkcpgn=rssnws1
via Discovery News http://news.discovery.com/space/galaxies/when-did-galaxies-get-their-spirals-131230.htm#mkcpgn=rssnws1
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