A Cherry Tree to Mars [pdf]patrickmccray.com 39 pointstodayiamme9 years ago1 commentSaveHideCopy link On HNComments−andyjohnson09yThe blog post [1] that links to the PDF gives some context to Sagan's talk.[1] http://www.patrickmccray.com/2013/04/30/cherry-trees-to-mars...
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The blog post [1] that links to the PDF gives some context to Sagan's talk.
[1] http://www.patrickmccray.com/2013/04/30/cherry-trees-to-mars...