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the big bang theory of origin of universe
the big bang theory of origin of universe
the big bang theory of origin of universe
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Who or what made the universe? How did it begin? Humans have always wondered: Has the universe always existed like we see it now, or did it somehow start all of a sudden? In the past century, it was discovered that the universe was expanding and people wondered why. These are the questions the Big Bang theory tries to answer. While no one is completely sure of all the details about it, the big bang is the most widely accepted theory about the beginnings of our universe.
The big bang theory states that the universe began by expanding from an infinitesimal volume with extremely high density and temperature. It was initially smaller than the head of a pin. The theory states that space was created at the same time as the big bang and expanded carrying matter with it. Many physicists believe even time began with the big bang. The evidence supporting the big bang was so great that in 1951, the Catholic Church declared the big bang model to comply with the Bible.
One of the first discoveries made to support the big bang model was the discovery that the universe was expanding. An astronomer by the name of Vesto Slipher observed that there are more galaxies receding from the earth than are approaching it. Physicists know that a galaxy is approaching or receding by observing at the spectrum of its light. If its spectrum is toward the shorter wavelength, called Blueshift, then the galaxy is approaching and if its spectrum is toward the longer wavelength, called redshift, then the galaxy is receding. The amount of the shift depends on the speed the object is approaching or receding. Slipher observed more galaxies whose spectrums were redshifted than those whose spectrums were blueshifted.
Further support emerged in the late 1920s, when Ed...
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... big bang gives a clear picture of how the universe began. By tracing back the expanding universe, scientists can picture a hot, violent beginning to the universe. Furthermore high temperatures from the start give an explanation to the high amount of helium and even the existence of deuterium. Moreover, scientists were able to detect the faint radiation from the big bang. The theory that the universe began with a big bang is essentially conclusive and may prove to be one of the greatest astronomical discoveries of mankind.
Works Cited
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· THE BIG BANG:" Umich.edu. Web. 20 Apr. 2014
· "Philosophy of Science." Http://www.csus.edu/. Web. 21 Apr. 2014.
· "Technology Views Birth of the Universe." NASA Jet Propulsion Laboratory. Web. 27 Apr. 2014.
A spectrometer is used to measure the movement of distant galaxies. The spectrometer can measure the type of atoms the light was produced from, how bright the light is, and if the light is stretched or compressed. The measurements obtained with spectrometers show that distant galaxies are moving away from earth and the more distant the galaxy the faster it is moving away form earth. There are stars known as “Cepheid variables” which change in brightness relative to the distance from the viewer. The distance if these stars can be determined from the brightness that is observed. Some light that is observed is “red-shifted’. This occurs when the wavelength of the light is longer, the lengthening of the wavelengths happens because the galaxy or star that is producing the l...
Cosmology is a field of astronomy that focuses on the framework, and emergence of the universe. Over the years, many cosmologists have contributed to the subject, using many forms of technology, to make a multitude of discoveries. Improvements in technology are responsible for superlative discoveries, chiefly about the Big Bang, the origin of our universe. The works of various cosmologists, such as Galileo Galilei, Edwin Hubble, Robert Dicke, Arno Penzias, Robert Wilson, and Vera Rubin have changed the way humanity views the universe, through their use of technology, and through their brilliance.
On the other hand, believers in science take a completely different approach in explaining the origin of the universe. Although there is more than one theory, the most popular today is the concept of the big ba...
Astronomers are able to specify how much the universe is expanding by measuring this redshift from the spectrum of the supernova. By studying many supernova at different distances, astronomers can piece together a history of the expansion of the Universe. This expansion gave the astronomers the evidence that there is dark energy out there that cause the universe to expand.
The Big Bang Theory is the approved model that scientists use to describe the beginning and original evolution of the universe. The Big Bang created all of the matter and energy in the universe, including hydrogen and helium. A few of the light atoms were forged into the cores of stars, over billions of years, or through violent explosions of supernovae
13.8 Billion years ago, long before the creation of the popular television show, The Big Bang Theory occurred and is now the most widely recognized cosmological model for the universe. The Big Bang theory is an attempt to explain how the universe we know today began. Over the years, numerous discoveries and research have revealed that our universe did have a beginning, and that there was nothing before the Big Bang occurred. Throughout history there have been other theories as to how our universe began, though the Big Bang still prevails. One of the most exciting parts about the universe is a vast and fascinating place and there are even new discoveries still being made today. The Big Bang theory is widely regarded as the most likely scenario
Dr. Barbara Mattson, Meredith Gibb, Phil Newman. "Origin and Destiny of the Universe." [Online] 18 August 2009. .
Overbye, D. (2014, March 17). Space Ripples Reveal Big Bang’s Smoking Gun.The New York Times. Retrieved March 21, 2014, from http://www.nytimes.com/2014/03/18/science/space/detection-of-waves-in-space-buttresses-landmark-theory-of-big-bang.html?_r=0
“We used to look up at the sky and wonder about our place in the stars, now we just look down and worry about our place in the dirt” (Interstellar). No one knows, or may ever know for certain, how the universe ever came into existence. Cosmologists have uncovered multiple viable theories that explain the advent of the universe, but we assume that there can only be one. In 1927, Georges Lemaître suggested that the universe began at a moment in time and from there everything expanded exponentially outward from that single point. Lemaître’s model was only one of many developed that genuinely offered an explanation to how the universe was created. Lemaître’s model was approached with skepticism because, at the time, a static universe was generally
The Big Bang is a theory that the universe was created in a very large
In addition, more distant galaxies appear to be receding faster than closer ones. The whole Universe is in a state of expansion, with every galaxy moving away from every other galaxy. This relation is summarized as the Hubble Law: z=H_0/c d. A key point that is arising from this relationship is that as we go back in time, galaxies must have been closer and closer together. If you go back far enough, the Universe must have been concentrated at a single point in space, which leads us to the topic of this paper: the exploration of the early Universe. In order to understand the processes and interactions taking place in the first 400,000 years after the Big Bang, we need the tools and predictions of high energy particle physics and cosmology. Figure 1 provides a timeline of the events and processes taking place in the early Universe and will be used as an orientation for the following discussion of the Standard Model of particle and the observable cosmic microwave
Hubble found this relationship while working in Pasadena. His work essentially involved measuring the redshift of a number of distant galaxies. He was also able to measure their relative distance by measuring the apparent brightness of a class of variable stars in each galaxy. This relationship now called Hubble’s law states that the greater the distance to a galaxy the greater the redshift in an equation: V=H0d. Hubble constant is believed to be around 73.2 km/s/Mpc. This finding was exciting because Hubles law is directly proportional-so an object twice as far away is receding from us twice as fast. This is just what would be expected in an expanding universe, as an expanding universe would be expanding equally on all sides. Such a thought process can easily be visualized through the “expanding chocolate chip cake analogy” whereas the cake is being baked the chocolate chips in the cake recede from one another as the cake expands. This is of course just what the galaxies do as the universe expands. This discovery was incredible and was credited with solving Olber’s paradox of the dark night sky. It is also important to understand that the term red shift with respect to light implies that the object is moving away from the observer. This is because in a Doppler shift where light waves get “redshifted”
Astronomers have found the first direct evidence of dark energy in the afterglow of the Big Bang, the radiation caused by the Big Bang called cosmic microwave background (CMB). The cosmi...
The big bang theory is an attempt to explain how the world began. The big bang theory begins with what is called a “singularity.” This term is used to describe an area in space which defies all the known laws of physics. Singularities are thought to exist at the core of black holes. Black holes are areas of intense gravitational pressure. The pressure is thought to be so intense that matter is pressed together into an infinite amount of pressure. The dense hot mass of the singularity slowly expanded. This process is called inflation. As the singularity expanded the universe went from dense and hot to cool and expansive. Inflation is still continuing on today which means that the universe is continually expanding.
Since the dawn of intelligent man, humanity has speculated about the origins of the universe.