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A Cherry Tree to Mars [pdf]
(
patrickmccray.com
)
39 points
by
todayiamme
on April 18, 2017
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1 comment
andyjohnson0
on April 19, 2017
[–]
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...
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[1] http://www.patrickmccray.com/2013/04/30/cherry-trees-to-mars...