Which explorer proved that Columbus did not find the indies?

The explorer who demonstrated that Columbus did not reach the Indies was Ferdinand Magellan. His expedition, which began in 1519 and resulted in the first circumnavigation of the globe, provided concrete evidence that the lands discovered by Columbus were part of a new continent, separate from Asia. This revelation shifted the understanding of the world’s geography and underscored that Columbus had not reached the East Indies as he had claimed.