Who proposed the heliocentric model of the solar system?

The heliocentric model of the solar system was proposed by Nicolaus Copernicus in the 16th century. This revolutionary concept positioned the Sun at the center of the solar system, with the Earth and other planets revolving around it. Prior to Copernicus, the geocentric model, which placed the Earth at the center of the universe, was widely accepted.

Copernicus's heliocentric theory was significant not only because it redefined humanity's understanding of its place in the cosmos but also because it laid the groundwork for future scientists like Galileo and Newton to build upon. Galileo provided observational evidence that supported the heliocentric model through his telescopic discoveries of Jupiter's moons and the phases of Venus. Newton further developed the understanding of gravity and motion, which helped explain why planets orbit the Sun.

In contrast, Tycho Brahe was known for his detailed astronomical observations and for proposing a hybrid model that still placed the Earth at the center, contradicting the essence of the heliocentric theory. Thus, Nicolaus Copernicus is recognized as the originator of the heliocentric model, making this answer the most accurate response to the question.