In this episode, we explore how ancient civilizations such as the Babylonians, Egyptians, and Greeks perceived the shape of the Earth, from flat disc cosmologies to early spherical theories. We discuss the contributions of philosophers like Pythagoras and Aristotle, who advanced the understanding of a spherical Earth based on empirical observations. Despite these advancements, flat Earth beliefs persisted through the Middle Ages, intertwined with religious and cultural ideologies. The Age of Exploration challenged these notions, leading to the acceptance of a spherical Earth supported by scientific revolutions in the Renaissance. This historical journey highlights the evolution of human understanding and the persistence of flat Earth theories in the face of scientific evidence.