Ever since Archimedes was a boy he was very fascinated by astronomy. The astronomers in those days only had their and very few crude tools like sundials, measuring rods, and compasses to draw circles. One of Archimedes theories was that the earth revolved around the sun with a circle of stars placed around them. Another one of his theories was that the sun was 30 times larger than the moon. The actual size of the sun is one million thirty-two thousand times larger than the moon. He was also an inventor. He built an instrument that measured the angle of the rising sun. He also created an astronomical machine, which was the first planetarium, that illustrated the position and movements of the bodies in the solar system. Back then, they didn't know earth was a planet. Archimedes never lost interest in astronomy. He realized that astronomy was just applying mathematics to nature. Even though some of his theories were partially wrong, he still contributed to the science of astronomy today. …show more content…
He discovered that two weights that balance at equal distances are equal in weight. If they are not equal, the heavier weight will be lower. He discovered ways to find the center of gravity by using plane figures like triangles and parallelograms. He never really knew what gravity was but he still knew it was