NASA History Office on Twitter: “#Today in 1687, Newton’s “Principia” was published, stating his laws of motion & gravity http://t.co/bXFrork3e6 http://t.co/u7lb3m3zQZ”

Check out a great moment in astronomical history: https://mobile.twitter.com/NASAhistory/status/617747276635635714

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About astronut1

I describe myself as a "historian, lore-ean, and motormouth." I consider myself a student of the humanities, as well as a teacher. My motto is that if I can learn it, anyone can.

Posted on July 5, 2015, in Uncategorized. Bookmark the permalink. Leave a comment.

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