Essay about Evidence of Prehistoric Bacterial Life Found from Mars

1495 Words Mar 23rd, 2013 6 Pages
Evidence of Prehistoric Bacterial Life found from Mars: I wonder if there are still any possible life-forms on Mars

From the beginning of time, the universe has always been a mystery to mankind. We have been intrigued by the many wonders of the universe and as time elapsed, technology increased, and the minds of human beings have evolved, extraterrestrial life remains a recurring interest. The rising curiosity of extraterrestrial life has plagued the minds of Scientists to common folk. People have held various theories based on their imagination on what life would resemble.
Over time, many great discoveries have been made as well as many excursions into outer space. Planets, stars, galaxies, comets, our moon and sun we’ve discovered.
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Hydrocarbons also known as breakdown products of dead micro-organisms here on earth, were also found as well as mineral phases consistent with by products of the meteorite. (Williams,2005)
A two-year investigation was underway and co-led by JSC planetary scientists Dr. David McKay, Dr. Everett Gibson and Kathie Thomas-Keprta of Lockheed-Martin, with the major collaboration of a Stanford team headed by Professor of Chemistry Dr. Richard Zare, as well as six other NASA and university research partners.(NASA,1996)
Dr. McKay explains that it was not a single discovery which led the researchers to believe it was evidence of life on mars but a combination of all the findings.
"There is not any one finding that leads us to believe that this is evidence of past life on Mars. Rather, it is a combination of many things that we have found," McKay said. "They include Stanford's detection of an apparently unique pattern of organic molecules, carbon compounds that are the basis of life. We also found several unusual mineral phases that are known products of primitive microscopic organisms on Earth. Structures that could be microscopic fossils seem to support all of this. The relationship of all of these things in terms of location - within a few hundred thousandths of an inch of one another - is the most compelling evidence."(McKay,1996, para. 4)
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