A. Robert Stephenson
B. Nicolaus Copernicus
C. John Napier
D. None of these
Explanation :Nicolaus Copernicus proposed heliocentric model of the solar system. He placed the Sun at the center rather than the Earth. He explained the work in his book “On the Revolutions of the Heavenly Spheres”. He presented the idea that the Earth along with other planets revolves around the Sun.
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