What concept connects both Copernicus and Galileo in their research?

The connection between Copernicus and Galileo lies in their support of the heliocentric model of the universe, which posits that the Sun is at the center, and the Earth, along with other planets, revolves around it.

Copernicus introduced this revolutionary idea in his work "De revolutionibus orbium coelestium," presenting a significant shift from the geocentric model that had dominated for centuries, wherein the Earth was thought to be the center of the universe. His heliocentric theory laid the foundation for a new understanding of our solar system.

Galileo, building on Copernicus’s framework, provided empirical support for the heliocentric model through his astronomical observations made with a telescope. He discovered the moons of Jupiter and the phases of Venus, which further validated the idea that not all celestial bodies revolve around the Earth. His findings challenged the established geocentric view and played a crucial role in the acceptance of the heliocentric theory.

These contributions from both scientists helped to transform the scientific landscape, emphasizing the importance of observation and evidence in the field of astronomy. Their alignment in supporting the heliocentric model highlights a pivotal moment in the history of science, marking a significant transition toward modern astronomical thought.