Dec 06, 2016
By Michael Kramer
An extremely rare copy of Sir Isaac Newton’s seminal work in physics and astronomy is expected to sell for upwards of $1.5 million – as the most valuable item in a Christies auction of 400 books and manuscripts.
Newton’s Principia goes on the block December 14th in New York.
He also presented his theory of gravity: that the forces keeping the planets in orbit and our feet on the ground are the same – and not separate.
A copy of Principia given to King James II – sold for $2.5 million in 2013.