The theory of Copernicus was approved by people Only after a long time. It was Galileo and Kepler, two famous scientists, who took his theory forward to its perfection.
Johannes Kepler (1571-1630), a German scientist, popularised the idea that the earth was a mere part of the solar system. He wrote this in his famous book “Cosmographic Mystery”. He also proved that the planets revolve around the sun not in a circular manner but in an elliptical course.
