Available in PDF, epub, and Kindle ebook. This book has 566 pages in the PDF version, and was originally published in 1687; this translation by Andrew Motte, 1846.
List: Neil deGrasse Tyson's Essential Book List
Mathematical Principles of Natural Philosophy ('Philosophiae Naturalis Principia Mathematica'), is a work in three books by Sir Isaac Newton, first published on the 5th July 1687. The Principia states Newton's laws of motion, forming the foundation of classical mechanics, also Newton's law of universal gravitation, and a derivation of Kepler's laws of planetary motion. The Principia is justly regarded as one of the most important works in the history of science.
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