Is Anyone Out There? Essay -- Astronomy

Earth is small. Many people find it laborious to believe, but when cardinal thinks of earth in its context, amongst billions of galaxies, stars, planets, and an infinite universe, earth is a mere grain of sand on the beach that is space. With this in mind, one may, quite understandably, find it hard to believe that earth is the only planet that sustains life. With todays advanced technology and light, extensive evidence has been prepare suggesting a great exchangeablelihood of life on early(a) planets. The baring of life on other planets has huge implications for humankind, as it would likely weaken a more thorough understanding of what human life is, how it came to be, and mayhap raze insight into why humans exist.Oftentimes, people ignore empty talk regarding the possibility of life on other planets. This may be for apparitional reasons or because many people see it as more science fiction than scientific, but there is a substantial difference in the midst of Hollywood s perception of aliens and what is likely to be the first stranger life discovered (Borenstein). In all reality, carbon, hydrogen, oxygen, and a few other basic elements are all it takes to create the miracle of life, and these chemicals could exist in absolute places other than earth (Bryson 2). Some life may not even require that, like the microbe found in a lake in California, which was able to survive on arsenic and phosphorus alone (Borenstein). match to Borenstein, the life that scientists are looking for is more accurately described as a life form or microbial slime, much like the microbes that became humans via evolution. Approximately 140 billion galaxies inhabit the universe, with somewhere between one hundred billion and four hundred billion stars in Earth... ...rawstory.com/rs/2010/12/08/evidence-mounting-daily-proven/Bryson, Bill. A Short History of Nearly Everything. New York Broadway Books, 2003. Print.Cohen, Daniel. The old-fashioned Visitors Have Creatur es from Other Planets Ever Lived On Earth? Garden City, NY mental image & Comp., Inc., 1976. Print.Kaufman, Marc. Reaching for the Stars Its Alive appear There Scientists Seek Out the Evidence. McClathy-Tribute News Service. 17 June 2011 n.p. Web. 15 Mar 2012. Spotts, Pete. In Search of Life, more than Planet Candidates Are Found. Are Any Just Right? Christian Science Monitor. 12 Sep 2011n.p. Web. 15 Mar 2012. Story of the Universe. European Space Agency, 2011. Web. 15 Apr 2012.