The heliocentric theory proposed by Nicolaus Copernicus, which states that the Sun is at the center of the solar system with planets orbiting around it, was significantly supported and proven by the work of Johannes Kepler and Galileo Galilei.
Johannes Kepler, through his laws of planetary motion, provided mathematical evidence that planets move in elliptical orbits around the Sun. His work built upon Copernicus’ model and addressed many of its shortcomings.
Galileo Galilei, using his telescope, made observations that supported the heliocentric model. He discovered the phases of Venus, which could only be explained if Venus orbited the Sun, and observed the moons of Jupiter, showing that not all celestial bodies orbited the Earth.
Together, their contributions provided the necessary evidence to prove Copernicus’ heliocentric theory, revolutionizing our understanding of the universe.