Question: who was the famous indian astronomer who discovered that earth revolves on an axis
Answer: Aryabhata 476 -- 550 CE Aryabhata was the author of the Āryabhatīya and the Aryabhatasiddhanta , which , according to Hayashi ( 2008 ) : ' circulated mainly in the northwest of India and , through the Sāsānian dynasty ( 224 -- 651 ) of Iran , had a profound influence on the development of Islamic astronomy .