Galileo’s publication regarding sunspots served as a direct challenge to the viewpoints of whom?

Answer

Christoph Clavius and others

Galileo published his findings in 1613 specifically as a direct response to claims made by Christoph Clavius and others who sought to deny or downplay the existence of the sunspots.

Galileo’s publication regarding sunspots served as a direct challenge to the viewpoints of whom?
Galileo Galileisunastronomyscientistobservation