الأصول الرياضية للفلسفة الطبيعية
Tyson then continues to relate the collaboration Edmund Halley and Isaac Newton in the last part of the 17th century in Cambridge. The collaboration would result in the publication of "Philosophiæ Naturalis Principia Mathematica", the first major work to describe the laws of physics in mathematical terms, challenging the prevailing notion that God had planned out the heavens, and against objections and claims of plagiarism from Robert Hooke, and financial difficulties of the Royal Society of London. Tyson explains how Newton's work would influence many factors of life, including modern space flight.