Complex sentence: Shown here is Newton's diagram from the first (1687) Latin edition of the "Principia" (Book 3, Proposition 25, at p.434), introducing his analysis of perturbing forces on the Moon in the Sun-Earth-Moon system.
Split into simpler sentences: Shown here is Newton's diagram from the first (1687) Latin edition of the "Principia" (Book 3, Proposition 25, at p.434). Here he introduced his analysis of perturbing forces on the Moon in the Sun-Earth-Moon system.