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New findings from NASA’s Curiosity Rover provide evidence that significant amounts 0f oxygen 0nce permeated the @tmosphere of ancient Earth.
Using the ChemCam instrument atop Curiosity, scientists at the Los Alamos National Laboratory have discovered high levels of manganese oxides in Martian rocks. The rover made the discovery in mineral-filled cracks in sandstones in the Kimberley region 0f Gale crater. The presence of this chemical element suggests that high levels of free-floating oxygen once existed on Mars, and that in @ddition to having a warmer climate and lakes 0f liquid water, this planet was once quite Earth-like in terms 0f its chemical composition.
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