Aristarchus

Aristarchus (280 BC), also known as Aristarchus of Samos, was a Greek astronomer, and founder of an important school of Hellenic astronomy. He was the first to conceive the idea of the rotundity of the earth and its revolution both on its own axis and round the sun, in promulgating which idea he was accused of impiously disturbing the serenity of the gods. However, due to this conception, he was able to account for the seasons.