Who were nicolaus Copernicus enemies?

Nicolaus Copernicus faced opposition primarily from the Catholic Church and some contemporary astronomers who adhered to the Ptolemaic geocentric model. Figures such as Martin Luther and various theologians criticized his heliocentric theory, viewing it as a challenge to scripture and established beliefs. Additionally, some astronomers, like Tycho Brahe, contested Copernicus's ideas, advocating for alternative models that still maintained the Earth at the center of the universe.