Stars are born within clouds of dust and swirling wind in our atmosphere. The turbulence within these clouds creates enough gravitational force between the gas and dust that it begins to collapse upon itself and becomes more dense and hot further into the cloud. The cloud continues to collapse, collecting dust and gas around the hot center which is called a protostar. (http://science.nationalgeographic.com) Protostars are not hot enough to emit visible light in their early stages, but emit infrareds. In their later stages, protostars emit more visible light, but images taken with visible light telescopes have a difficult time seeing past the large masses of dust around stars, if the stars aren’t very bright.(http://coolcosmos.ipac.caltech.edu) Stars the size of our sun are estimated to mature within a period of about 50 million years, this is from initial cloud collapse, to adulthood. Our sun should stay in this mature phase for about 10 billion years, and it is estimated that the sun is at the middle of its lifetime. Stars are given life from nuclear fusions of hydrogen; forming helium deep within them. The energy moves outward, giving the entity enough resistance to the pressure of collapsing under its own weight, and making it shine. Some stars shine faintly and some shine brighter or hotter than the sun. Red Dwarfs are the smallest of stars, and shine for tens of billions of years. Hypergiants, the largest stars in the known universe are one hundred or more times larger than our sun, and emit hundreds of thousands of times more energy. That being said, their lifetimes are only about a few million years, which is much shorter than that estimated of our sun. Hypergiants were believed to be common in the early universe, but are... ... middle of paper ... ...r distant. The stars are what we shall always seek. Works Cited http://science.nasa.gov/astrophysics/focus-areas/how-do-stars-form-and-evolve/ http://coolcosmos.ipac.caltech.edu/cosmic_classroom/cosmic_reference/starform.html http://news.nationalgeographic.com/news/2013/05/130529-how-stars-die-sodium-space-astronomy-science/ http://science.nationalgeographic.com/science/space/universe/stars-article/ http://www.astro.wisc.edu/~dolan/constellations/ http://docs.kde.org/stable/en/kdeedu/kstars/ai-colorandtemp.html http://www.bobthealien.co.uk/stardiff.htm http://imagine.gsfc.nasa.gov/docs/science/know_l1/pulsars.html http://hubblesite.org/explore_astronomy/black_holes/home.html http://imagine.gsfc.nasa.gov/docs/science/know_l2/supernovae.html http://stars.astro.illinois.edu/sow/star_intro.html http://www-istp.gsfc.nasa.gov/istp/outreach/workshop/thompson/facts.html
In using this allusion, Frost not only continues the "poetic tradition" but adds all the depth of meaning of Keats' poem to his own. The star doesn't want much of us -- only to stay above us. He says that "when the mob is swayed" or when social, political, or moral upheaval takes place and the norm is to be radical, the star likes being above it all, condescendingly regarding the earth. When this happens, we should "choose something like a star" and concentrate on it.
...leted of its nuclear fuel and lost its outer layers. When a small to medium (less than 10 solar masses) main-sequence star begins to run out of fuel in its core, the core will begin to collapse where hydrogen on the edges of the collapsed core can be compressed and heated (Chandra 2012). The nuclear fusion of this new hydrogen will create a new gush of power that will make the outer layers of the star to expand out; this is known as the red giant phase. In the red giant phase over millions of years, all of the stars energy supplies are used up leaving behind a hot core that is still surrounded by the expanded outer layers. The outer layers are eventually expelled by stellar winds which end up creating a planetary nebula and the hot core left behind forms a white dwarf star where the pull of gravity is supported by degeneracy pressure (p. 538 Bennett en al. 2013).
As Clarice Lispector was writing what would become her last literary creation, The Hour of the Star, little did she know that while her body was plagued with the devastations of cancer, her mental struggle for peace and grace in death would inspire her most renowned novel. Perhaps it is because of those circumstances, she created a novel with intuitive reflections on both life and death, as seen through the life of the main character, Macabea. The story is narrated by Rodrigo S.M., and although Rodrigo attempts to maintain a neutral stance, he is often conflicted by his own perceptions and feelings. At the book’s commencement Rodrigo spends quite some time explaining that while the story is mainly about a woman, having the book narrated by a female would weaken the richness of content. He explains that a woman is incapable of clearly emphasizing the harshness of reality; that she is too emotional and attempting to explain the life of a wretched girl would be hard because her emotions would not allow an unbiased depiction of the cruelties of life. Macabea is introduced in the novel as a poor girl who does what she must to survive in the slums of Rio de Janeiro. She is, Rodrigo remarks, nothing out of the ordinary. Physically there is nothing about Macabea which sets her apart from the other countless street rascals who live hand to mouth. He then provides readers with some of her early life history, including how she almost died at birth because of rickets, and how both her parents succumbed to typhoid fever when she was a toddler. Finally after their death Macabea was forced to move in with her aunt, who too eventually passed away, but not before procuring the child a job to support herself. In the course of the novel the popular culture, though vague and metaphorical at times, affects Macabea and the secondary characters personalities and actions.
Stars are born and reborn from an explosion of a previous star. The particles and helium are brought together the same way the last star was born. Throughout the life of a star, it manages to avoid collapsing. The gravitational pull from the core of the star has to equal the gravitational pull of the gasses, which form a type of orbit. When this equality is broken, the star can go into several different stages. Some stars that are at least thirty times larger than our sun can form black holes and other kinds of stars.
The extreme brightness of the O-type and B-type stars, coupled with the Earth’s atmosphere, has always made high-resolution imaging of the star-forming region difficult. But recent advances in adaptive optics and the repair of the Hubble Space Telescope have allowed for incredible detail into the center of the dust cloud. 3 The technological advances have also helped reveal several faint stars within the center of the nebula.
Supernova's are paradoxes, a cataclysmic event of pure irony. They are killers extremely violent deadly killers, while a supernova is the death of a giant star, they also give birth to the basic elements, you, me and everything that makes up our world from the hydrogen in the air we breath to the iron and steel that makes up the highest skyscrapers to the hemoglobin in our blood. They are superbly beautiful, to actually see one would be to see the hand of god. To see what they create...
What makes you want to turn a page in a book? This would be the interesting topics throughout the book. In the novel “A Short History of Nearly Everything” Supernovae in part one makes for an interesting story. Did you know a supernovae could blow up planet earth? Well it can. What exactly is a supernova?
A star begins as nothing more than a very light distribution of interstellar gases and dust particles over a distance of a few dozen lightyears. Although there is extremely low pressure existing between stars, this distribution of gas exists instead of a true vacuum. If the density of gas becomes larger than .1 particles per cubic centimeter, the interstellar gas grows unstable. Any small deviation in density, and because it is impossible to have a perfectly even distribution in these clouds this is something that will naturally occur, and the area begins to contract. This happens because between about .1 and 1 particles per cubic centimeter, pressure gains an inverse relationship with density. This causes internal pressure to decrease with increasing density, which because of the higher external pressure, causes the density to continue to increase. This causes the gas in the interstellar medium to spontaneously collect into denser clouds. The denser clouds will contain molecular hydrogen (H2) and interstellar dust particles including carbon compounds, silicates, and small impure ice crystals. Also, within these clouds, there are 2 types of zones. There are H I zones, which contain neutral hydrogen and often have a temperature around 100 Kelvin (K), and there are H II zones, which contain ionized hydrogen and have a temperature around 10,000 K. The ionized hydrogen absorbs ultraviolet light from it’s environment and retransmits it as visible and infrared light. These clouds, visible to the human eye, have been named nebulae. The density in these nebulae is usually about 10 atoms per cubic centimeter. In brighter nebulae, there exists densities of up to several thousand atoms per cubic centimete...
The Sun is the most prominent feature in our solar system. It is the largest object and contains approximately 98% of the total solar system mass. One hundred and nine Earths would be required to fit across the Sun's disk, and its interior could hold over 1.3 million Earths. The Sun's outer visible layer is called the photosphere and has a temperature of 6,000°C (11,000°F). This layer has a mottled appearance due to the turbulent eruptions of energy at the surface.
Stars are born in the interstellar clouds of gas and dust called nebulae that are primarily found in the spiral arms of galaxies. These clouds are composed mainly of hydrogen gas but also contain carbon, oxygen and various other elements, but we will see that the carbon and oxygen play a crucial role in star formation so they get special mention. A nebula by itself is not enough to form a star however, and it requires the assistance of some outside force. A close passing star or a shock wave from a supernova or some other event can have just the needed effect. It is the same idea as having a number of marbles on a trampoline and then rolling a larger ball through the middle of them or around the edges. The marbles will conglomerate around the path of the ball, and as more marbles clump together, still more will be attracted. This is essentially what happens during the formation of a star (Stellar Birth, 2004).
Our sun is the central pivot point to which or entire planet and solar system is built around. With out it all life on our planet would cease to exist. Within this paper we will explore how our Sun and solar system formed and came to resemble what we see today.
Supernovas are extremely powerful explosions of radiation. A supernova can give off as much energy as a Sun can within its whole life. A star will release most of its material when it undergoes this type of explosion. The explosion of a supernova can also help in creating new stars.
One thing us as humans have never been able to fully understand is astronomy. Always having an unexplained mystery, astronomy also has served as a way to keep time and predict the future. The word “astronomy” is defined as the study of heavenly bodies, meaning anything in the sky such as stars, galaxies, comets, planets, nebulae, and so on. Many people, if not everyone, is amazed by the night sky on a clear, moonless night.
The education system in India is based on forced learning that kills student’s spirit and zest of learning. In the film “Like Stars on Earth,” we look specifically at the draw backed role played by parents and teacher in Indian education system. We follow the story of a dyslexic Indian boy, Ishaan, who always had trouble coping with his studies, but in the end with the help of an understanding teacher he is able to study normally and catch up with his peers. We will analyze this film using the concepts from Practices of Looking to explain our thesis. Eddie will cover the concepts of encoding and the ideology surrounding Indian education; Kiranjot Singh will explain the concepts of punctum, negotiated reading and producer’s intended meaning;