Classical Indian science achievement was demonstrated by astronomer Aryabhata's contributions to astronomy and mathematics, including proposing the earth's rotation and calculating pi accurately.
An achievement of classical Indian science is exemplified by the astronomer Aryabhata, who was the first to propose that the earth rotates on its axis and provided scientific explanations for phenomena like eclipses. His accurate calculations of pi and the length of the solar year showcase advancements in mathematics and astronomy during the Gupta era in India.
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