This audiobook is narrated by an AI Voice. In the 17th century, in a Europe torn apart by wars, religious disputes, and superstitions, Johannes Kepler transformed a fragile life—marked by illness, precariousness, and family losses—into one of the most profound intellectual transformations in history. Between faith and method, between the intuition of a secret harmony and the discipline of Tycho Brahe's data, Kepler dismantled the 'perfect' sky of circles and constructed a new universe of ellipses, laws, and numbers that still underpin modern astronomy. This book traces his journey from his childhood in the 16th century to his lasting legacy, showing his lights and shadows, his obsessions, his fertile errors, and the battles—public and private—that ran through his work.