Blue Marble - Black Marble

http://cosmiclog.nbcnews.com/_news/2012/12/07/15755286-40-years-later-apollo-17s-blue-marble-leaves-a-mark-on-our-memory?lite

http://www.nasa.gov/mission_pages/NPP/news/earth-at-night.html

Too bad it isn't a little blacker...

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