Who first established the fact that the earth revolves round the sun?
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Kepler
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Copernicus
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Newton
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Galilio
B
Correct answer
Explanation
Nicolaus Copernicus formulated the heliocentric model in the early 16th century, proposing that the Earth revolves around the Sun rather than being the center of the universe. His work 'De revolutionibus orbium coelestium' (1543) fundamentally changed astronomy. Kepler later refined this with elliptical orbits, while Galileo provided observational evidence.