Answer
The heliocentric model proposed by Aristarchus of Samos, which placed the Sun, not Earth, at the center of the Solar System, was not widely accepted in ancient times. Instead, the prevailing theories of Aristotle and Ptolemy, which placed Earth at the center, enjoyed greater support. It took many centuries, the observations of astronomers like Copernicus and Galileo, and scientific developments before Aristarchus's insights became fully embraced.