Newton's 1687 book on gravity, funded by Halley, sold for Rs 5.49 crore

In a significant auction event, a first edition of Isaac Newton's *Philosophiæ naturalis principia mathematica* garnered an impressive US$576,000. This pivotal work introduced revolutionary concepts of motion and gravity through mathematical frameworks. With ties to distinguished scholars like the Kennet family and the vital endorsement from Edmond Halley, Newton's insights continue to resonate in disciplines such as engineering and astronomy, shaping modern scientific thought.