Possible Life On Mars

Code : rogue 1 In 1996 a free radical of NASA scientists announced that a meteorite thought to have come from vitiate contained possible fossil evidence of Bacteria-like livelihood forms . The meteorite traveled by means of space to Earth millions of years ago after be blasted from the surface of spoil , belike by the meeting of a large meteor . The scientists evidence was based on the presence of certain chemicals and minerals - as well as microscope pictures of bacteria-life features - inwardly the meteorite . Intense scrutiny of this meteorite may several(prenominal)how have been dirty by earth life . Even though it is dummy up possible that the rock does contain fossilized bacteria from impair , most(prenominal) scientist now focus instead on what arouse be agreed upon the mysterious meteorite . Liquid water probably once flowed through the meteorite , sources of heat energy such as meteorite impacts or volcanism acted upon it probably contains at least(prenominal) some simple thoroughgoing molecules that may have originated on Mars . These conditions-liquid water , heat , and organic molecules - are the requirements for life to exist on a planet . So even if the Mars meteorite does not lay aside actual evidence of life on Mars , its most important message maybe that mars is one of the a couple of(prenominal) places in the solar system where we know that the conditions were at least possible . The goal now is to figure out and where to examine for more convincing evidence . Source : Bell , Jim . Mars (Planet Microsoft Encarta 2006 (DVD . Redmond , WA : Microsoft Corporation 2005LIFE ON MARSSpeculations on possible life on Mars ( and other planets ) go back to the start-off days whenCode : Possible life on Mars Page 2 the nature of planets as Earth-like bodies was recognized .

Mars in particular was , and is still considered as the most Earth-like of all planets , as it shows polar caps , an atmosphere with meteorological activity over a stony surface , a comparable rotation stop ( length of day , seasonal variations , and a temperature not alike different from that of Earth , compared to every other planet of our solar system . These facts were realized slowly during the 17th and 18th degree Celsius , when Christian Huygens identified the low surface feature (systis major ) in 1659 and the polar cap in 1672 , G . F . Maridi found in 1719 that Mars appearance (specially the polar caps ) was ever-changing from opposition to opposition , and eventually William Herschel in 1781 and 1784 made the first Mars and found its inhabitants would probably enjoy conditions similar to that on Earth in many respects19th century observers became convinced to dupe dark lakes and oceans between bright continents on Mars , and that the seasonal changes could be best understood as melting of trumpery a summer , and freezing again in spend seasonThese views survived well until the first spacecraft , Mariner 4 , arrived at Mars and transmitted its famous photographs , showing a moon-round cratered terrain without any signs of considerable vegetation and measured atmosphere and temperatures some(prenominal) less comfortable for most creatures on Earth , although some experiments indicated that some...If you want to get a full essay, order it on our website: Orderessay

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