Heliocentric Model: Venus Phases And Jupiter's Moons Staying With Jupiter

The Scientific Revolution brought a new way of thinking about the universe, and brought an end to Europe’s medieval past. Many scientists have devoted their lives to creating new ideas about the physical universe. These scientists created the assumption that the universe and nature are governed by mathematical laws. Each of the three scientists, Nicolaus Copernicus, Johannes Kepler, and Isaac Newton contributed to the breakdown of the medieval world view. Nicolaus Copernicus thought past the idea of a geocentric universe, and established the idea of a heliocentric theory, or a sun-centered universe. Johannes Kepler presented the idea of an ellipse, otherwise known as the planets following an oval shaped orbit, and not a perfect circle. Finally,

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

Aristotle’s model by today’s standards can easily be picked apart, but at the time, it was the best explanation that could be made with so little technology and insight. Although his theories have long since been replaced, they created a base for future scientists to work off of and challenge. Over time many great scientists began to question Aristotle’s theories. Nicolaus Copernicus (1473-1543), for example, contested the absolute significance of the earth, and he did not agree that it should be viewed as the center of the entire universe (Lizhi & Youquan, 1987). He plotted the earth at the center of the universe and created a heliocentric system just as mathematically complicated as the Ptolemaic system (one that also improved on Aristotle’s), but it explained a number of anomalies, including resolving the issue of retrograde motion (Ede, A. & Cormack, L., 2004). The problem was that Aristotle’s physics of ‘natural motion’ fell apart without the earth in the center of everything.

Johannes Kepler (1571-1630) was a German astronomer who believed in the heliocentric theory. Kepler is a clear example of the narrow line that separated science and religion. Nonetheless, his ideas would show that things could be solved through reason alone. He believed that the harmony of the human soul could be found through numerical relationships that existed between planets. He found that the planets: Mercury, Venus, Earth, Mars, Uranus, Jupiter, and Saturn all revolved at different times. For example, the earth revolved around the sun in a year while Saturn revolved around the sun in fifty years. From this, Kepler found a mathematical ratio, nine to the two-thirds power, to explain this phenomenon. This was revolutionary to humanity’s place in the universe. People were shocked that the universe could be explained by math alone rather than religion. This went strongly

Among these people were Copernicus who believed the sun was at the center of the world and the earth, stars and planets revolved around it. Danish astronomer Brahe helped contribute to this idea by contributing a large mass of data about the universe that he was able to discover. His student Kepler kept his ideas going, as he formulated many laws of planetary motion. He said the orbits around the sun were elliptical, planets don’t move in a uniform speed and the time a planet completes its orbit is related to its distance from the sun. Meanwhile, Florentine Galileo decided to use experiments to find out what happened and not what should happen, and discovered that a uniform force makes a uniform acceleration as well as inertia laws, that an object will be in motion forever unless stopped by another force.

the heliocentric solar system. Johannes Kepler further modified the heliocentric system, by mathematically showing that the planets’ orbits are elliptical. With his invention of the telescope, Galileo made new observations about the solar system and found mathematical laws that described the movement of the planets. Later, Isaac Newton established a universal law of gravity. With the new scientific discoveries, the gap between religion and science increased. Science revolutionized the human though and its understanding of the universe.

Copernicus published "On the Revolutions of the Celestial Spheres" in 1543 , sparking off the scientific revolution and a new era of astronomical thought. This theory explains that the sun, not the Earth, is the center of the solar system and planets move in a circular motion around it. This had many social, intellectual and religious made of huis idea. For instance, this theory brought into question the strict reading of the Bible and philosophies of the Catholic Church.

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.

All his writings consisted of numerous references to God. He saw his work as a fulfilment of his Christian duty to understand the works of God. Kepler believed that God had made the Universe according to a mathematical plan. Although, Kepler did thank God for granting him insights, but the insights were still presented as rational. While studying theology at the university at Tubingen, he fell under the influence of Michael Mastlin. He then abandoned theology and became a teacher of astronomy and mathematics in Austria. Johannes Kepler’s work illustrated the narrow line that would separate magic and science in the early Scientific Revolution. Kepler compared numerical relationships between planets in harmony of the human soul. He described it as discovering the "music of the spheres." Overtime, Johannes Kepler devised the three laws of planetary motion. He confirmed Copernicus' heliocentric theory, and eliminated the scientific possibility of crystalline spheres moving in perfectly circular orbits. Eventually, Johannes Kepler’s three laws affected the eliminated idea of uniform circular motion. By the end of Kepler’s life, the Ptolemaic system rapidly lost its ground to the new ideas. Many questions do remain unanswered. However, it was an Italian scientist who achieved an important break through to a new cosmology by answering the first question and striding through the

Johannes Kepler was a man who made a surplus of achievements and discovery. What he is most known for is discovering that planets don’t go in a circular motion around the

The Ptolemaic view of the motions of the stars was earth centric, or geocentric. Ptolemy believed that all the planets revolved around the earth, the earth was the center of the universe. Copernicus on the other hand held the belief that the universe revolved around the sun, or that the universe was heliocentric. Copernicus also only considered there to only be six planets, as he didn’t count the moon like Ptolemy. Kepler held similar beliefs t Copernicus, and believed that the reason why a god-created universe only had six planets instead of seven was based on Plato’s idea of the five Platonic Solids. That just like there are only five forms of matter and five platonic solids, the universe must have been intelligently created in a similar

Galileo advised heliocentricity, providing the only model that fit all his observations. Copernicus's model, which also changed the orbits of the planets, it made mathematical sense. It also explained all of his new data. His data began to make more sense.

Galileo, Kepler and Newton altered classical interpretations of nature and challenged classical sources of knowledge in several different ways. Kepler published several different books and even came up with the three laws of planetary motion. The first law is the orbit of planets are ellipses with the sun at one focus. The second law is a line from the planets to the sun sweeps over equal areas in equal intervals of time. The third law states that the planets orbital period squared is proportional to its average distance from the sun cubed. Kepler used his mathematical skills to wok on the Rudolphine Table, which was based off and improved from the work of Tycho Brahe. The Rudolphine Table was created to help show the position of the planets

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

Galileo Galilei built a telescope in 1609, and he studied the night sky, observing the earthlike features of the Moon, moons orbiting Jupiter, and sun spots. He published his work, which later earned him a trial by the church and a house arrest for life. “According to a story that began to circulate shortly afterward, as he left the court for house arrest he stamped his foot and muttered defiantly, looking down at the earth: Still, it moves” (page 530, Chapter 16). Francis Bacon and René Descartes established standards of practice and scientific evidence, and they were true believers in human thinking. Physician, William Harvey contributed to science by observing dissected living animals and experimented on himself that the blood circulates in our bodies through veins, heart, and arteries. Inventor and experimenter Robert Hooke introduced microscope into the laboratory and studied the structure of plants on the cellular level. Isaac Newton gave us laws of motion, universal gravity, the reflecting telescope, optic theories,