Which of the following was not discovered by Aryabhatta?

Which of the following was not discovered by Aryabhatta? Correct Answer The earth revolves around the sun

Aryabhatta: 

• Aryabhatta was the first Indian mathematician and astronomer lived in Kusumpur in Pataliputra (Bihar).
• He did many discoveries like algebraic identities, trigonometrical functions, the value of pi, Place value system, Theory of eclipses.
• He worked on the approximation for pi to 3.1416.
• Aryabhata also explained the solar and lunar eclipses in his book. The shadow of the earth falling on the moon causes eclipses.
• Aryabhata provided elegant results for the summation of series of squares and cubes.
• His works include the Aryabhaṭiya (499 CE, when he was 23 years old) and the Arya-Siddhanta.
• The great discovery that the Earth rotates around its own axis from west to east is recorded in the Aryabhatiya.
• Aryabhata did solve quadratic and indeterminate equations, and provided an extremely accurate approximation for “pi”.