幫寫論文-SETI的目標和功能

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SETI is an acronym for “search for extra-terrestrial intelligence” which is a scientific effort for discovering the signals from an alien civilization. Many projects are actively engaged in improving the search of the better singles by adopting many developed strategies. It helps to explore, understand and explain the presence of life in the universe. Many private institutes are involved in the research and study of SETI.
The project Cyclops in 1971, NASA- Ames Research Center was the site of SETI. Ohio state university is working with SETI Institute in the Argus project to search more strong transient signals. The SETI Institutes use Global Positioning Satellite (GPS) receivers to synchronize the detection of the signals within a microsecond. The SETI institute’s projects Phoenix is using a computer to search about 1000 of 200 light-years of the solar systems for radio signal beams. About two-thirds of first 1000 stars have been searched with no success yet reported (Mills, Grant and Verdet, 2007). The SETI League will construct Array2k on private land of New Jersey. The array can serve as a strong verification system signal reported by the other members of the projects. The Third Decennial US–USSR Conference on SETI, the 1993 Bio-astronomy Symposium and the 1992 NASA workshop help to detect the importance of SETI in social science.
There are many current projects on SETI-
Near time persistency checker: The goal of SETI is to find the persistent signals that moves at the same frequencies and points in the sky.
Astropulse: It looks for the signals that are narrow in frequency but have a long duration.
Opinion of scientist:
Andrew Fain, was first to start SETI project by using radio telescopes and came up with a set of criteria like-(i) It should be concentrated, (ii) It shows slow peaking and slows decreasing.
Jill Tarter says about the SETI is in its infancy and comparison would be like taking a glass, filling it with water from the ocean and upon seeing no fish declaring none exists.
Paul Davies states that “aliens have been far away from Earth, and scientist should also do an extensive search on the moon and solar system also” (Coppens, 2012).
Harrison points out that experiences as humans have conditioned the expectations about intelligent life in the universe and have channelled the search process.
The main mission is to understand, explore and describe the nature and origin of life in the universe. The researchers have applied their knowledge and skills to investigate on the evolving systems in the universe and guiding the future and present generations.
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