In 1521, the Portuguese navigator Magellan's voyage around the world proved that the earth was round 母 平录 (麦哲伦航船复制品) (麦哲伦环球航线图)In 1521, the Portuguese navigator Magellan’s voyage around the world proved that the earth was round. (麦哲伦航船复制品） （麦哲伦环球航线图）