O vasta zona de pe Marte acoperita candva de apa
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Adaugă-ne ca sursă preferată în Google
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Urmărește-ne pe Discover
O zona foarte intinsa de pe Marte - peste 300.000 de kilometri patrati - aflata in zona Terra Meridiani, a fost acoperita candva de apa. Un studiu publicat in revista "Nature" si realizat in urma
O zona foarte intinsa de pe Marte - peste 300.000 de kilometri patrati - aflata in zona Terra Meridiani, a fost acoperita candva de apa. Un studiu publicat in revista "Nature" si realizat in urma analizarii datelor transmise de modulul robotizat Opportunity (aflat la suprafata "Planetei Rosii") si de sonda spatiala Mars Global Surveyor, arata ca un ocean "comparabil ca intindere cu Marea Baltica, destul de adanc si care a existat suficient timp incat sa lase in urma sa un strat de sedimente cu o grosime de 500 de metri", s-a aflat in jurul zonei Meridiani Planum. Evident, urmeaza ca informatiile culese de la fata locului de Opportunity si care sugereaza prezenta apei sa fie confirmate. Analizele facute de modulul Opportunity la inceputul anului au permis sa se traga concluzia ca micile sfere de culoare gri intiparite pe o roca descoperita pe Marte reprezinta urme de apa. Astfel, cercetatorii au putut determina ca aceste sfere contin hematite, un oxid al fierului, or, pe Pamant, mineralul respectiv se formeaza de obicei in prezenta apei si intr-o lunga perioada de timp. Utilizand spectrometrul instalat la bordul sondei spatiale americane Global Mars Surveyor, care orbiteaza "Planeta Rosie", profesorul Brian M. Hynek a observat ca mineralele de culoare gri sunt raspandite intr-o arie foarte vasta situata la 20 de grade longitudine si 14 grade latitudine. Depozitele sedimentare cu un astfel de colorit se regasesc din abundenta pe o arie de cateva sute de kilometri nord, est si vest de Meridiani Planum, ceea ce sugereaza ca in aceasta zona a existat apa la suprafata solului sau in apropierea suprafetei solului martian.
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