Who discovered the system and in what year?
The heliocentric solar system was first discovered by a Greek astronomer by the name of Aristarchus of Samos. Philolaus and Hicetas came to the realization that the Earth was not the center of the solar system, in fact it revolves around something that controlled the movement of the planets. These two men could not figure out what was in the center of the solar system.
Two centuries later, Aristarchus expanded this theory and suggested that the Earth and other planets revolved around one specific object. He believed that object was the sun.
This theory never became popular because people did not understand how it all added up and never ended up supporting it.
Who brought it to life?
The heliocentric solar system was brought to knowledge and discussed by Nicolaus Copernicus in 1508. Yet he didn't share his discoveries with anyone until he published his book Commentariolus in 1514. He later wrote another book on the heliocentric solar system and named it De revolutionibus orbium coelestium. Aristarchus inspired Copernicus's work. Copernicus mentioned Aristarchus in his book but later took his name out of it.
Over the years the solar system model continued to improve, it went from a geocentric idea to the heliocentric solar system.
