There is a common misconception that someone was killed for stating that the Earth is round. However, this claim is not historically accurate. The notion that people believed in a flat Earth during the Middle Ages and that individuals were persecuted or executed for challenging this belief is a myth.
In fact, ancient Greek philosophers, such as Pythagoras and Aristotle, had already proposed a spherical Earth. The idea of a flat Earth was not prevalent among educated circles even during the medieval period.
One historical figure associated with the shape of the Earth is Galileo Galilei, an Italian scientist and astronomer who lived in the 16th and 17th centuries. Galileo defended the heliocentric model, which placed the Sun at the center of the solar system, challenging the geocentric view of the Catholic Church. As a result, he faced opposition from the Church and was subjected to the Inquisition. Galileo was ultimately placed under house arrest for the remainder of his life, but he was not killed for his beliefs.
It's important to distinguish between historical facts and popular misconceptions, as the narrative of someone being killed for stating that the Earth is round is not based on accurate historical events.