isaac newton found out how gravity works.
galileo found out how stars moved and mapped them
copernicus found that the sun was centered in our solar system
Answer:The hierarchy of the Catholic Church consists of its bishops, priests, and deacons. ... Dioceses are divided into individual communities called parishes, each staffed by one or more priests, deacons, or lay ecclesial ministers. Ordinarily, care of a parish is entrusted to a priest, though there are exceptions.