What Does It Mean To Say That The Earth Is Not In The Center Of The World

Ptolemy, a Roman astronomer came up with the theory that the universe revolved around Earth and all the creatures inhabiting it (Doc. C). This theory, The Geocentric Universe of Ptolemy, was adjusted by most of the people during The Middle Ages. However, much later on, Nicolaus Copernicus, a Polish astronomer, disagreed with Ptolemy’s theory. With his use of math and reason, he came up with a new theory called The Heliocentric Universe of Copernicus (Doc. C). He said that the universe & Earth itself revolves around the sun. The Church denied this theory because they did not want to be proven wrong. If the Church was wrong about this part of the universe, this would then cause man to wonder what else they could be wrong about, or even lied to them about. This new theory taught men to think for themselves and not to rely on the Church for

“But you are rather waiting to hear from me how it occurred to me to venture to conceive any motion of the earth, against the traditional opinion of astronomers and almost against common sense…” (39).

While the Roman Catholic Church believed that the earth was the center of the universe, Nicolaus Copernicus’s discovered that the Earth actually was one of the planets hat revolved around the sun. “For, in the first place, they are so uncertain about the motion of the sun and moon that they cannot establish and observe a constant length even for the tropical year. (Document 1)” The church belief did not make sense because it was wrong. They were going off wrong information that they could not establish a constant year, which confuses people. Nicolaus said that the earth moved around the sun, which made more sense and

Document 2 2a) The sun stood in the center of the universe and different planets revolved around the

Aristotle’s model of the universe was a geocentric universe. This meant that the Earth was at the centre of the universe and that all stars were on a celestial sphere. A celestial sphere is an imaginary sphere which acts as a dome around the Earth from which you can see the stars and the universe. Although Aristotle’s model was good for its time it could not explain retrograde motion of the planets.

When it comes to theories and law’s concerning the movement of stellar bodies and why the universe is moving the way it is and how it came to be, data is continuously being added and revised. It is through this constant revising of theories and establishing of laws that core ideas are proven, with modern day scientists expanding knowledge for the rest of us. One of the earliest pioneers of spatial theories was the Italian astronomer, Galileo Galilei, who used the theories of those who came before and he learned from to paint a better picture of the way the universe was set. True to form, he dealt with accusations of heresy and resistance to his ideas from others during his life, which today are held as being before his time.

Nicolaus Copernicus was an astronomer. He studied the movements of the planets but as he did what Ptolemy had stated made less and less sense to him. Ptolemy had written that the solar system was geocentric, or in other words that the earth was the center of the universe and that the sun and other planets orbited the earth. This theory was accepted for 1,400 years until around this time. Copernicus said that the solar system was heliocentric, and the sun was the center of the solar system.

Nicholas Copernicus was the first to question the universal truths and teachings of the church. He devised a theory that the earth along with the other planets revolved around the sun. This theory disagreed with Aristotle and the old teachings that the universe revolved around the earth, and that man was the center of the universe.

Prior to Galileo’s time, the Greek and medieval mind, science was a kind of formalism, a means of coordinating data, which had no bearing on the ultimate reality of things. The point was to give order to complicated data, and all that mattered was the hypothesis that was simplest to understand and most convenient. Astronomy and mathematics were regarded as the playthings of intellectuals. They were accounted as having neither philosophical nor theological relevance. There was genuine puzzlement among Churchmen that they had to get involved in a quarrel over planetary orbits.

Galileo’s Dialogue on the Two Chief World Systems uses powerful logic and simply described concepts to overcome the Aristotelian bias of the populous and argue in favor of Copernicus’ heliocentric view of the universe. Copernicus theorized that the earth, along with the other planets in the sky, is in motion around the sun. The Aristotelian’s geocentric worldview, that the earth is the motionless center of the universe, was deeply ingrained into the minds of the people and the teachings of the church. Galileo’s argument had to be not only incisive and logical to have any sway, but it also had to avoid offending or denying the ancient principles of thought proposed by Aristotle. He walked this delicate line between educating the public and

Compare and contrast Copernicus’ model of the universe to that described by Aristotle and Ptolemy.

Ptolemy would say that the Earth is undoubtedly at rest. He makes this claim in The Peculiar Nature of the Universe (Ptolemy 72). To Ptolemy, the idea that earth is stationary and the heavens move is the most obvious and simplest conclusion to draw from celestial observations. Other thinkers formed different hypotheses; some thought that the earth rotated on an axis while the heavens remained at rest, and others claimed that both earth and the heavens move by different amounts (Ptolemy 74).

(Frova 41) Galileo’s confirmation of Copernican’s heliocentric theory explained through logical arguments and mathematical laws clearly the answers to these difficulties.

Johannes Kepler was a German astronomer and mathematician who lived between 1671-1630. Kepler was a Copernican and initially believed that planets should follow perfectly circular orbits (“Johan Kepler” 1). During this time period, Ptolemy’s geocentric theory of the solar system was accepted. Ptolemy’s theory stated that Earth is at the center of the universe and stationary; closest to Earth is the Moon, and beyond it, expanding towards the outside, are Mercury, Venus, and the Sun in a straight line, followed by Mars, Jupiter, Saturn, and the “fixed stars”. The Ptolemaic system explained the numerous observed motions of the planets as having small spherical orbits called epicycles (“Astronomy” 2). Kepler is best known for introducing three

The Catholic Church played an important role at the time when all the works in which the movement of the earth was admitted, Catholics were forbidden to teach, and even read, the Copernican theories. The “Copernican Theory” modeled some problems of enormous importance for Christian’s obviously theological nature. Leaders like Martin Luther and John Calvin told us that Scripture brandished against Nicolaus Copernicus and provoked repression against its followers, but generally abandon the fight Protestantism once the “Theories of Copernicus” were confirmed with indisputable evidence. In this paper, I will first evaluate the history about how “Copernican Theory” and its model of the earth came into existence. I will also analyze the “Copernican Theory” in light of Churches idea of the earth being flat. I will ultimately argue that Nicolaus Copernicus played an important role in the history of Philosophy of Science.