Renaissance+and+Reformation+Science

proposed by Nicholas Copernicus. Ptolemy believed that the earth was the center in which the sun and all other planets circled. This system of belief was called the geocentric system; "geo" means earth in Greek. Later in the 16th century, a Polish astronomer and theologian went against the geocentric system. The astronomer is known as Nicholas Copernicus. He developed an astronomical theory and said that the sun is the center of the universe and the earth, moon and other planets revolved around the sun. This new system that was discovered by Copernicus was called the heliocentric system; "helios" is the Greek word for "sun." || This is the England scientist Isaac Newton at the age 46. He had made a brilliant theory to explain why the planets moved as they did. One story is said that Newton saw an apple fall from a tree. He wondered if the force that pulled the apple down to the earth might also controlled the movements of the planets. In the next 20 years, Newton perfected his theory. Using Mathematics, he showed that a single force keeps the planets in their orbits around the sun. He called this force gravity. Newton's first discovery was made before he graduated from college. He established his Binomial Theorem. He published Mathematical Principals of Natural Philosophy in 1686, explaining the law of gravity and other workings of the universe. The discoveries and questions he solved changed the world forever. ||
 * [[image:heliocentric.jpg width="430" height="386"]] || [[image:newton.jpg width="416" height="386"]] ||
 *  This image shows the sun as the center of the universe. This theory was