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How Carl Sagan Used His NASA Connections To Get A Picture Of The Earth From 3.7 Billion Miles Away

Hey, NASA? Yeah, it’s Carl. Hey, can you do me a quick favor?

Read more: http://upworthy.com/how-carl-sagan-used-his-nasa-connections-to-get-a-picture-of-the-earth-from-37-billion-miles-away

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