Communiqué de Presse de la NASA du 24 Mars 2015. Par Nancy Neal-Jones / William Steigerwald (NASA Goddard Space Flight Center), Nancy.N.Jones@nasa.gov / William.A.Steigerwald@nasa.gov, Guy Webster (Jet Propulsion Laboratory, Dwayne Brown (NASA Headquarters). Traduction de Pierre Brisson “Une équipe utilisant les instruments du laboratoire SAM (pour « Sample Analysis at Mars ») embarqué sur le rover Curiosity de la NASA, a détecté pour la première fois, dans les gaz produits par chauffage d’un échantillon de sédiments, la présence d’azote à la surface de Mars. L’azote a été observé sous la forme d’oxyde nitrique et pourrait provenir de la décomposition de nitrates lors du chauffage. Les nitrates sont une classe de molécules qui contiennent de l’azote sous une forme qui peut être utilisée par les organismes vivants. La découverte renforce les éléments de preuve selon lesquels l’ancienne Mars était habitable. Le laboratoire d’analyse SAM (doc. NASA/GSFC) L’azote est [...]
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