* Nicolaus Copernicus (1473-1543): He revolutionized astronomy with his heliocentric model of the solar system, placing the Sun at the center, not the Earth. This challenged the prevailing geocentric view held for centuries.
* Tycho Brahe (1546-1601): A Danish astronomer known for his incredibly precise observations of the stars and planets. While he didn't fully embrace the heliocentric model, his data was crucial for later astronomers like Kepler.
* Johannes Kepler (1571-1630): This German astronomer built upon Copernicus's work and Brahe's observations to develop the three laws of planetary motion, describing the elliptical paths of planets around the sun.
* Galileo Galilei (1564-1642): An Italian astronomer who made crucial discoveries using the telescope, including the phases of Venus, the moons of Jupiter, and the craters of the moon. His observations strongly supported the heliocentric model and contributed to the Scientific Revolution.
These are just a few of the many brilliant astronomers who flourished during the Renaissance. Their work helped transform our understanding of the universe and paved the way for modern astronomy.