Before revision: In 499 CE, the Indian astronomer Aryabhata or Aryabhat suggested that the spherical Earth rotates about its axis daily, and that the apparent movement of the stars is a relative motion caused by the rotation of Earth.
After revision: In 499 CE, the Indian astronomer Aryabhata Ia or Aryabhat suggested that the spherical Earth rotates about its axis daily, and that the apparent movement of the stars is a relative motion caused by the rotation of Earth.