More handpicked essays just for you.
Short note on the explanation of the Big Bang theory
Short note on the explanation of the Big Bang theory
Describe the big bang theory
Don’t take our word for it - see why 10 million students trust us with their essay needs.
Throughout the ages, humans have been looking for a way to see into the past. In the year 1990, astronomers from NASA made this possible. Sending the Hubble Space Telescope into orbit with the space shuttle Discovery, NASA would make historical discoveries beyond their wildest dreams. Earlier this year they discovered a galaxy approximately 13 billion light years from Earth. Viewing the object at 750 million years after the big bang, scientists have looked into a time shortly after the "Dark Ages," a time before the first galaxies and quasars were formed. This incredible discovery was made with the aid of a cluster of galaxies known as Abell 2218. Being as massive as it is, Abell 2218 bends and amplifies any light that passes through it, working as a natural telescope ("Hubble"). The Hubble Space Telescope has become a great and valuable astronomic tool that NASA says is too costly and dangerous to keep running, a decision that may be premature.
Originally planned to launch in 1986, the Hubble Space Telescope has seen its share of problems. Starting with the explosion of the Challenger space shuttle, the Hubble's birth into space was delayed four years (Raven). On April 24, 1990, NASA put the telescope into orbit, only to discover that its primary mirror had a systematic aberration. To fix the problem, a mission in December 1993 set out on the space shuttle Endeavor.
The astronauts of the Endeavor replaced the High Speed Photometer with the Corrective Optics Space Telescope Axial Replacement (COSTAR). This device was designed to correct the aberration of the primary mirror. Even before the Endeavor mission, the space telescope produced many interesting images and was much more accurate than any Earth telescope. With the lack of atmosphere, the HST can look at objects at an angular distance of only 0.05 arcs second apart. The traditional ground-based telescopes can only resolve images about 0.5 arcs second apart, even under perfect sky conditions. With the new improvements, the HST could perform at the level for which it was designed. It could more accurately calculate the rate at which a galaxy is "receding from the Milky Way as a function of their distance" (qtd. in "Hubble"). For those confused by that statement: the HST would take a picture of a galaxy at one point and three seconds later (or any other given amount of time) take another picture of the galaxy and measure how much farther away it is.
Having said all of this the culture of the company greatly improved all of the employee’s lives; in doing so Lincoln Electric has been greatly successful and is a company all other corporations should aspire to be
Distances so vast that the light from those areas in space is billion years old. Illingworth was able to see these ancient giants with the Hubble Space Telescope. A telescope that is high above the atmosphere, because it can distort the image. 100 sextillion miles or 17,010,779,502.32 light years is the most distant galaxy Illingworth
History has a strong presence in the current world and as much as the world has changed and evolved many things remain the same. Many traditions and customs reverberate through decades and are carried on by individuals who honor and uphold their predecessor’s beliefs and fundamental rules. One such company is Lincoln Electric Company, founded in the late eighteen hundred by John C Lincoln it has manufactured original designed electric motors. Since its establishment it has maintained a leading status in the employment sector with low employee turnover, the only exception being retirement. It has continuously been ranked the best company to work for and many competitive and non-competitive companies look toward Lincoln Electric to model the
The range for the jaguar is fairly extensive. Its historical range started in the southern United States and stretched all the way down through Central America to cover most of South America. Fossils have been found as far north as Missouri, Illinois, and Tennessee with jaguars they may have weighed in at around 420 pounds (Museum). Now, due to various reason such as habitat fragmentation, hunting, and other human interference, the range starts in the southwestern area of the United States. It was thought that the jaguar was extirpated from the United States but sightings have been reported in Arizona, New Mexico, and Texas. The northern extent of the range has receded southward about 1000 kilometers and the southern extent about 2000 kilometers northward. The range still flows through Central America but it has become extinct in El Salvador and Uruaguy (IUCN). The southern tip of the range occupies mid to southern South America, covering parts of Argentina and Brazil. The numbers typically increase from north to south. Jaguars are usually found in dense rain forest and that is a l...
Centuries ago, people gazed into the night sky wondering what it was that they were looking at. When astronomers first started to study the night sky, like Galileo, Copernicus and even modern day astronomers, they all shared one goal, and that was to see further than anyone has ever before. The invention of the Hubble Space Telescope changed the study of astronomy forever. Astronomers were seeing and learning more in just days of the launch of the telescope than past astronomers had in their lifetimes. The Hubble Space Telescope is the most technologically advanced telescope to enter space. Its advanced technology has made it possible to obtain countless amounts of data about space and open many doors in the exploration of space. Its accuracy has and still is proving/debunking the myths of space.
Around the 1970s, due to South Africa’s internal contradictions with its economy and people, the Apartheid began its slow demise. Soon the united nation began to take notice of South Africa and began to get involved. With South Africa now in the spot light, Prime Minister P.W Botha left office due to his belief that he had failed to keep order in the country. After the reassignment of P.W Botha, F.W Klerk had taken office. The final stage of the demise of the Apartheid began when Klerk lifted the ban off the ANC and other African political parties. The last blow was the release of Nelson Mandela after 27 years in prison. Now that South Africa’s hope was out of prison he continued to ...
Hubble is a telescope used by NASA as one of the orbiting "great observatories”. Hubble was launched in 1990, changing the history of astronomy since Galileo's telescope with an expected lifespan of 15 years, although will really be about 22 now. Early on, Hubble was used to discover galaxies beyond the Milky Way. The purpose of the Hubble Telescope is to gather light from cosmic objects so scientists can have a better understanding of the universe around us. Hubble is one of the best telescopes to ever orbit the earth. It was one of the very first telescope to be placed in space. The purpose of Hubble is to take pictures of the galaxy as it orbits around the Earth at 17,500 mph. These images are very detailed because the Hubble Space Telescope orbits around the outer atmosphere. Even though weight is not an issue in space, Hubble weighs 24,500 pounds. Many different instruments are used by Hubble, including the Cosmic Origins Spectrograph. Originally installed in May 2009, the Cosmic Origins Spectrograph replaced the Corrective Optics Space Telescope Axial Replacement (COSTAR), which corrected the blurred pictures in its first service mission. The Cosmic Origins Spectrograph focuses on ultraviolet light. Because of the Cosmic Origins Spectrograph, the Hubble’s sensitivity was improved ten times more in the ultraviolet light and increases up to 70 times when looking at extremely faint objects. The purpose of the Cosmic Origins Spectrograph is to break down radiation using the ultraviolet light. The Cosmic Origins Spectrograph, otherwise abbreviated to COS, studies the evolution of the galaxy and the universe around us.
As the Hubble telescope’s life comes to a historic end, we look back at all it has done for the scientific community. The Hubble has helped scientists make many new discoveries about our universe. Galileo Galilei and Edwin Hubble were huge contributes to the astronomical community, therefore a major help in transforming the first telescope into something as amazing as the Hubble. The first telescope was perfected by Galileo in 1609, and around four hundred years later the Hubble was launched into space. Since then the Hubble has shown scientists many new discoveries about space that they would have never been able to figure out without the Hubble’s help. Since April 1990 the Hubble telescope has been greatly appreciated by the scientific community because of everything it has done. However, the Hubble has faced many problems along its way as well.
Increasing age, being female, mental retardation, and genetics are well-established risk factors of the disease. Age is the main factor of risk, because people from the ages to 75-84 are at 19% risk and people 85 and older are about 47% at risk. At all ages, women have a higher risk of Alzheimer's disease than men. By age 93 women's ...
...nal connection Alzheimer’s has to my life cannot see thorough fulfillment through research and garnering knowledge about the topic. I must follow in the steps of my grandmother and contribute to the cause to help those currently affected by the impairment but also look towards a future where a definitive treatment can slay the beast that is Alzheimer’s. Ways I can contribute to the cause include participating in Alzheimer’s Walks such as the one in Binghamton and continue my family’s dedication towards raising money for the Alzheimer’s association. In addition, knowing about the risk factors and causes gives me a better understanding of my personal risk for attaining the disease. However, this new knowledge does not frighten me or worry me about if my future will contain this diagnosis, but enables me to be prepared and ready to conquer any tribulation I encounter.
Viña, Jose, and Ana Lloret. "Why Women Have More Alzheimer's Disease Than Men: Gender and Mitochondrial Toxicity of Amyloid-β Peptide." Journal of Alzheimer's Disease 20.(2010): 527-533. Academic Search Premier. EBSCO. Web. 30 June 2010.
Tagarelli, A., Piro, A., Tagarelli, G., & Quattrone, A. (2006). Alois Alzheimer: A Hundred Years after the Discovery of the Eponymous Disorder. International Journal of Biomedical Sciences, 2(2), 196-204. Retrieved December 10, 2014, from http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3614590/
Alzheimer's disease is the source of the destruction or decline of brain cells or nerve cells. As a result of damaged nerve cells, the brain may have fewer bonds as compared to healthy brain cells. Amyloid plaques are outside the cell and are clusters of protein, Neurofibrillary tangles are proteins too, but they are inside the cell. It has not been confirmed on whether or not these protein clumps have any effect on Alzheimer’s or not, but they are ...
A telescope is a device used to magnify distant objects. Telescopes can be used to look at things on earth or at objects in space. The telescopes for use on the earth are known as terrestrial telescopes and the telescopes for looking into space are known as astronomical telescopes.
“Sheltered as we are by Earth's atmosphere and magnetic field, which deflect lethal radiation from space, we are like coddled children who have never ventured into a tough neighborhood” (Folger 2). Humans have been fascinated with space since the beginning of our time. Just like children and rough neighborhoods, we have tackled obstacle over obstacle to make it home again. In the end, we have a better knowledge and strength than before. The future of space exploration can assist us in answering the everlasting question of how the universe came to be. The more we explore the infinite galaxies, the more we can scientifically discover and create new technologies as science advances. As we continue to discover, we can create new fields and occupations for aspiring young students like myself.