Aristarchus lived from about the year 310 B.C. to about 230 B.C. Aristarchus was the first Greek philosopher and mathematician to make sense of the solar system. Others before him thought that the Earth is a sphere and that it moves, but he was the first to understand the heliocentric theory, which states that the sun is in the middle. In 288 or 287 B.C. he followed Theophrastus as the head of the Peripatetic School established by Aristotle.
Aristarchus has only one existing book that is “On the Sizes and Distances of the Sun and Moon.” In it he calculated the diameter of the Sun, which is about seven times the diameter of the Earth, and estimating the Sun’s volume is about 300 times the volume of the Earth (the actual diameter of the Sun is about 300 times the diameter of the Earth.) In this book there is nothing indicating his heliocentric theory. Aristarchus’ book on the planetary system with the Sun in the center did not survive. He also added that the universe is many times larger than generally assumed by astronomers, and the fixed stars are at an enormous distance from the Sun and its planets. Aristarchus regarded the Sun as one of the fixed stars, the closest to the Earth.
Aristarchus had no followers in his generation, or even in the next generation. About a century after Aristarchus, Seleucus, a Chaldean of Seleucia on the Tigris, who lived and wrote about the year 150 before the present era, adopted the teaching of Aristarchus.
Hipparchus is thought to be the greatest astronomer of ancient times, but he rejected the heliocentric system of Aristarchus, he did not reject it on a religious opinion, but on a scientific one.
Galileo Galilei and the religious authorities represent the clash between the new ideas and old ideas of the 17th century. Galileo Galilei represents the new ideas with his heliocentric theory, and the religious authorities represent the old ideas while demanding that Galileo Galilei’s ideas are false because the Bible says that the earth is the center of the universe. Galileo Galilei said, “They know that as to the arrangement of the parts of the universe, I hold the sun to be situated motionless in the center of the revolution of the celestial orbs while the earth revolves about the sun. They know also that I support this position not only by refuting the arguments of Ptolemy and Aristotle, but by producing many counter-arguments; in particular, some which relate to physical effects whose causes can perhaps be assigned in no other way.”(3:1) This provides infor...
Until Copernicus, the teachings of the Greek astronomer Ptolemy were considered the indisputable truth. His idea was that the Earth was the stationary center of the universe. The sun, moon, planets, and th...
Ptolemy also based on ancient astronomy significantly which the Earth sphericty recognized to him. The sphericty of the earth contain Saint Bede the Venerable in his account of the time, and wrote about 723 AD and this belief was reflected by the Christian writers.
In 1543 Nicholas Copernicus, a Polish Canon, published “On the Revolution of the Celestial Orbs”. The popular view is that Copernicus discovered that the earth revolves around the sun. The notion is as old as the ancient Greeks however. This work was entrusted by Copernicus to Osiander, a staunch Protestant who though the book would most likely be condemned and, as a result, the book would be condemned. Osiander therefore wrote a preface to the book, in which heliocentrism was presented only as a theory which would account for the movements of the planets more simply than geocentrism did, one that was not meant to be a definitive description of the heavens--something Copernicus did not intend. The preface was unsigned, and everyone took it to be the author’s. That Copernicus believed the helioocentric theory to be a true description of reality went largely unnoticed. In addition to the preface, this was partly because he still made reassuring use of Ptolemy's cycles and epicycles; he also borrowed from Aristotle the notion that the planets must move in circles because that is the only perfect form of motion.
The first record of the movement of the planets was produced by Nicolaus Copernicus. He proposed that the earth was the center of everything, which the term is called geocentric. Kepler challenged the theory that the sun was the center of the earth and proposed that the sun was the center of everything; this term is referred to as heliocentric. Kepler’s heliocentric theory was accepted by most people and is accepted in today’s society. One of Kepler’s friends was a famous person named Galileo. Galileo is known for improving the design and the magnification of the telescope. With improvement of the telescope Galileo could describe the craters of the moon and the moons of Jupiter. Galileo also created the number for acceleration of all free falling objects as 9.8 meters per second. Galileo’s and Kepler’s theories were not approved by all people. Their theories contradicted verses in the bible, so the protestant church was extremely skeptical of both Galileo and Kepler’s
Typically, people have the impressions that homeless people are sloppy, lazy, and irresponsible; however, the truth may be shocked because there are many people who have jobs and non-habitual to drug or alcoholics still remain homeless. ¡§It is a tragic aspect of our culture that homeless people, in addition to suffering from the hardship of their condition, are subjected to alienation and discrimination by mainstream society. It is even more tragic that alienation and discrimination often spring from incorrect myths and stereotypes which surround homelessness.¡¨(The National Law Center) Homelessness results from a complex set of circumstances that require people to choose between food, shelter, and other basic needs. Once the choices are limited which means people can no longer obtain what they need often result in hom...
Ptolemy, was a Roman astronomer who lived about 100 years after the time of jesus created a diagram of how he thought the universe worked, geocentric. On the contrary, Nicolaus Copernicus, who lived from 1473 to 1543 relied mostly on mathematics, referring to the universe as being heliocentric. Copernicus's theory of the universe was upsetting to the church on account of his ideas being based more on mathematics rather than the church’ beliefs. Copernicus made the perspective of man's dominance in a powerful world show to be no longer
Copernicus was a scientist and philosopher whose theory proposed that the sun was stationary, and the heavens orbit around the sun. Galileo tried to convince the Church not to abolish the Copernican theory but was told that he was not to entertain such thoughts with others.... ... middle of paper ... ...(n.d.).
"Overview of Homelessness In America." Homelessness In America. N.p., n.d. Web. 20 May 2014. .
In the United States, homelessness has remained a constant presence in all major cities. For example, in New York City, it is comprised of alcoholics, drug addicts, and other people (“American History”). It has largely moved into hidden places such as unused subway tunnels or under bridges. Whether or not we experience it ourselves, homelessness impacts all of us. Homelessness describes all normal life crisis. There is a difference between people who experience these challenges and become homeless and people who face them and do not use the support systems that they have in place.
Homelessness has become a serious problem in today’s society. Despite the organizations that help multitudes of homeless people, homelessness is continually increasing. In recent years, America’s culture has been changing due to economic, political, and social issues. These issues have caused a lot of stress on America resulting in abject poverty in several cities. Poverty is not nationwide, but if dealt with lightly, the affects can be catastrophic. Homelessness is increasing more than ever, and research proves that changing culture contributes to rising amount of homelessness.
The many causes of the homelessness issue has arisen from global conflict, unemployment increase, education tuition costs rising, and the increase of poverty. Homelessness is affecting all ages, ethnicities, and religions striking in both urban and rural communities. “Just last year, the national poverty rate rose to include 13.2% of the population. 1 in 7 people were at risk of suffering from hunger in the United States. In addition, 3.5 million people were forced to sleep in parks, under bridges, in shelters or cars.”
In conclusion, homelessness has taken a toll on millions of people around the world. Being physically or spiritually deprived of shelter has forced many people to face this gruesome situation. Observing ones stance on the issue, analyzing why the homeless resorts to violence to remedy their problems, and examining new and creative ways of helping the desolate, by implementing new plans to end this unfortunate situation, can provide better lives for the downtrodden and forgotten. No matter who you are, or what you do, everyone is affected by homelessness. Even if you have not experienced losing your dwelling firsthand, there is no doubt that almost every community is stricken with homelessness. Keep in mind that most of us are one paycheck away from being homeless ourselves.
Although homelessness is widespread and almost next to the catastrophic global hunger problems, it can be brought under control and its effect reduced to a greater percentage. By simply tracking the root causes of low wages and the lack of affordable housing as well as improving other support systems like housing vouchers and health care, homelessness can be solved.
Much to the dismay of the Church, two astronomers Galileo and Kepler had the audacity to challenge the authorities by suggesting that the sun-not the earth-was at the center of the universe. The church had a stronghold on the way the spiritual and physical world worked, so these discoveries only added to the Church’s resistance to their aims. Their discoveries came only after Kepler and Galileo began to question ancient theories about how the world functioned. These ancient truths were widely held but were inconsistent with the new observations that they had made. Kepler had discovered the laws of planetary motion which suggested that the planet would move in elliptical orbits, while Galileo followed with his discovery of the principle of inertia. Galileo concluded his finding b...