FactSentinel

The claim that medieval people believed the Earth was flat is a persistent myth with no basis in historical fact. Educated Europeans throughout the Middle Ages understood the Earth was spherical, a concept dating back to ancient Greek scholars like Pythagoras and Aristotle in the 6th and 4th centuries BC. By the time of the medieval period, this knowledge was well established in scholarly and religious circles alike. Influential Christian thinkers such as Thomas Aquinas and the Venerable Bede wrote about a spherical Earth, and university curricula across Europe taught astronomy that assumed the planet was round. Even the Catholic Church, often blamed for suppressing this knowledge, never officially endorsed a flat Earth model.

Christopher Columbus's 1492 voyage had nothing to do with proving the Earth's shape. The actual debate among scholars and navigators at the time concerned the Earth's circumference, not its shape. Columbus believed the Earth was smaller than most experts calculated, leading him to underestimate the distance to Asia. Critics at the Spanish court who doubted his plan were largely correct that the voyage was longer than he claimed, not that the Earth was flat.

This misconception largely stems from 19th-century writers, particularly Washington Irving's largely fictionalized 1828 biography of Columbus, which dramatized a conflict between Columbus and flat-Earth-believing clergy. This narrative was later amplified to portray religion as fundamentally opposed to science, a framing historians now recognize as inaccurate. Modern historical scholarship confirms that flat Earth belief was never mainstream during the medieval period among educated populations.