This weekend’s reading included a brief summary of some the work and adversity that some famous astronomers went through in their work. Copernicus was the first to oppose the idea that the earth was not the center of the universe but rather that it revolved around the sun with the other planets. I am not surprised that most people during that time period did not believe in his theory because it challenged a long-standing belief of the people of the time. Kepler and Tycho studied mars and the “Perfect solids.” After eight years Kepler realized that mars and the other planets do not travel in perfect circles around the sun. Finally, Galileo also defended Copernicus’ initial claim and proved that the planets revolve around the sun.