“The nitrogen in our DNA, the calcium in our teeth, the iron in our blood… We are made of starstuff.” – my hero, #CarlSagan #cidhue

December 20, 2016

“The nitrogen in our DNA, the calcium in our teeth, the iron in our blood… We are made of starstuff.” – my hero, #CarlSagan #cidhue | View in Instagram ⇒

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