Brief History Of Time By Stephen Hawking

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.

Claudius Ptolemy and Nicholas Copernicus were two famous astronomers known for their opposing views of the universe. Ptolemy founded the Ptolemaic system, which stated that the Earth was at the center of the universe. His idea was also known as the geocentric theory. The geocentric theory stated that the Earth was in the center of the universe, standing still, while all the other planets and stars revolved around it. The lack of scientific knowledge led his theory to be widely accepted. The Copernican theory, which revolved around a heliocentric idea, claimed that the sun was at the center of the universe, while the planets, including Earth, circled around it. His idea was not widely popular because of the already accepted propositions with

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.

Where would one be without our senses? The answer can be found in Neil deGrasse Tyson’s scientific essay “Coming to Our Senses” published in . In this scientific writing targeted toward the general public, Tyson’s gives a simplified explanation of the main idea or message. Tyson’s explained message is “we need science, math, and technology to see things our senses can not”.

During the 1500s, scientific ideas were primarily based on ancient and medieval ideas. Earlier ideas about the universe were based on Aristotle’s principles, which postulated that the earth was stationary and was at the center of the universe. Later Copernicus overturned the medieval idea of the universe by postulating that the earth revolved around the sun. Scholars like Brahe, Galileo refined the Copernicus model by experimenting and collecting evidence. Even though there were several fundamental breakthroughs by Galileo and other scientists, the new findings failed to explain the forces that controlled the movement of the planets and falling of objects on Earth, and Sir Isaac Newton challenged to solve this ambiguity.

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.

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

He published his first astronomical work about it entitled Mysterium Cosmographicum (The Cosmographic Mystery). His work defended the Copernican system but never actually proved that it was correct.

The general consensus in the academic world is that knowledge is power that can solve humanity’s problems. Sometimes, it is clouded by greed, or it lights the way for a better humanity. Scientists experiment to prove new theories, artists sculpt to express emotion and theologians study to provide interpretations of biblical stories. Therein lies the problem, while society is always searching for knowledge, to date there is no singular “foolproof” method of obtaining it. In the movie “The Theory of Everything,” Stephen Hawking has a “eureka” moment when pulling a sweater over his head and seeing flames through the material. In this case, it seemed that serendipity played a role in his search for truth. This led me to wonder, to what extent is the discovery of knowledge a matter of serendipity that can then go on to solve problems? While an exploration of whether knowledge is produced only to solve problems in the Natural Sciences may be more obvious, its application to Mathematics and Indigenous Knowledge may draw some interesting observations.

The beginnings of the Hubble Space Telescope started with Edwin Hubble in the 1920’s, who stated “that the faint fuzzy light sources coming from the night sky were actually far off galaxies” (Nielsen, Lars). In 1923, Edwin Hubble was looking out towards the Andromeda constellation and noticed that one of the stars, M31 had been moving. This gave Dr. Hubble the evidence that the universe was expanding

Albert Einstein, one of the most influential and intelligent physicists of all time insisted that the speed of light is constant. Yet, scientists have a theory and made predictions that the speed of light is a variable, which can be tested. According to Einstein, the speed of light (c) remains the same in any situation, which is 299,792,458 meters per second. This idea signifies that space and time could be different in different situations.

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

This observation means that it has taken every galaxy the same amount of time to move from a starting position to its current position. This observation is called "Hubble's Law," named after Edwin Hubble (1889-1953) who discovered this in 1929. Edwin Hubble’s evidence supports the expansion of the universe and suggests that the universe was once compacted. Third, if the universe was insanely hot as the Big Bang suggests, scientists should be able to find some of this heat left over. In 1965, Arno Penzias and Robert Wilson discovered a 2.725 degree Kelvin Cosmic Microwave Background radiation which infuses the observable universe. This is thought to be the remnant that scientists were looking for. Finally, the discovery of great amounts of Helium and Hydrogen lead to support the Big Bang Theory. (LaRocco)