Q. Who proposed the heliocentric model of the solar system?
Answer: Nicolaus Copernicus
Notes: Nicolaus Copernicus, a Renaissance-era mathematician and astronomer from Poland, revolutionized astronomical models by proposing the heliocentric model. This model positioned the Sun, rather than the Earth, at the center of the universe, challenging centuries of geocentric beliefs.

This question is part of 40000+ General Studies MCQ Series Course on GKToday Android app. Question Number: 100 in General Studies Mock Test - 74 in above course in App.