Spectroscopy: The Search for Extraterrestrial Life Essay -- Astronomy

Throughout fib humanity has been fascinated by the existence of extraterrestrial life. Today such(prenominal) ventures are in the development process and the discovery of life beyond our solar system, no matter how primitive, may soon become a huge(important?) scientific breakthrough. The three basic things that are required to consider a place even remotely livable are water system, a bug of energy, and organic materials. Habitability also depends on other factors that must also be taken into consideration such as how close the planet is to its one (in the case of our solar system, the sun), how long the water and organic materials existed there, and the size and chew of the planet. One must not confuse habitable with inhabited. The term habitable suggests only that there is a possibility that life could exist, not of necessity that life was present or still is. For more than a ten dollar bill the interest of searching for exoplanets (planets beyond our solar system) that are Earth-like has grown. At present, NASAs Kepler mission is searching almost 170,000 stars for orbiting planets. (Astronomy, April 2011, p.31). Only recently urinate discoveries of exoplanets been confirmed, although astronomers have been searching for such planets for centuries. One method employed by astronomers for rambling discovery, that uses data collected by the Kepler spacecraft, is the transit method. A transiting planet is a planet that passes in front of its host star as seen from Earth. (Wolf, 2007) In essence, what is detected is a slight dimming in the host stars light. Astronomers then determine whether the planet in the habitable zone of its star. The habitable zone (HZ) is the area around a star where it is possible for water to remain liquid on the surf... ... expensive venture. What is possible now is to peg the planets with the best odds in supporting life. For now, perhaps the best cash advance is to stay close to home and explore the planets in our solar system. working CitedVillard, R. (2011, April). Hunting for earthlike planets. Astronomy, 39(4), 28-33. Johnson, J. A. (2011, April). The stars that host planets. Sky & Telescope, 121(4), 22-27. Field, T. (2011, August). Spectroscopy for everyone. Sky & Telescope, 122(2), 68-71. What is spectrographic analysis?. (2004, August 7). Retrieved from http//kicp-yerkes.uchicago.edu/2004-summer/pdf/ysi2004-spectroscopy.pdf Wolf, P. (2007, August). Extrasolar planets. Retrieved from http//lasp.colorado.edu/education/outerplanets/exoplanets.phpSmith, A. W., & Cooper, J. N. (1979). Elements of physics. (9th ed., pp. 373-376). Toronto McGraw-Hill.