The idea that the Earth revolves around the Sun, known as the heliocentric model, was developed over centuries by many brilliant minds. Here's a breakdown:

* Ancient Greek Philosophers: Though not completely correct, some Greek philosophers like Aristarchus of Samos (310-230 BC) proposed the idea that the Sun was the center of the universe and the Earth revolved around it. However, this idea was not widely accepted at the time.

* Nicolaus Copernicus: In the 16th century, Nicolaus Copernicus (1473-1543) revived the heliocentric model with his book "De Revolutionibus Orbium Coelestium." Copernicus provided detailed mathematical calculations and observations to support his theory.

* Galileo Galilei: In the early 17th century, Galileo Galilei (1564-1642) used his telescope to make observations of the planets and their moons. His discoveries, like the phases of Venus, strongly supported the heliocentric model.

* Johannes Kepler: Johannes Kepler (1571-1630) further developed the heliocentric model by proposing that the planets moved in elliptical orbits, not perfect circles, around the Sun.

So, it wasn't one person who "learned" that the Earth revolves around the Sun. It was a long process of observation, experimentation, and debate that took place over centuries, with many individuals contributing to our understanding of the solar system.