Question:What was the Heliocentric model of the Solar system and who first described it?
Copernicus created the first Heliocentric model of the Solar system.
Helios is another name for the Sun, so Heliocentric means Sun at the centre.
This is the correct type of model for the Solar System because we now know that the Earth and the other planets do orbit around the Sun, but is not correct for the Universe.
Copernicus was a Catholic cleric in 16th Century Poland.