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    NASA’s Mars Reconnaissance Orbiter (MRO) tagged posts

    Mars Study yields Clues to Possible Cradle of Life

    October 7, 2017, Categories  Uncategorized

    The Eridania basin of southern Mars is believed to have held a sea about 3.7 billion years ago, with seafloor deposits likely resulting from underwater hydrothermal activity. Credit: NASA

    The Eridania basin of southern Mars is believed to have held a sea about 3.7 billion years ago, with seafloor deposits likely resulting from underwater hydrothermal activity. Credit: NASA

    The discovery of evidence for ancient sea-floor hydrothermal deposits on Mars identifies an area on the planet that may offer clues about the origin of life on Earth. A recent international report examines observations by NASA’s Mars Reconnaissance Orbiter (MRO) of massive deposits in a basin on southern Mars. The authors interpret the data as evidence that these deposits were formed by heated water from a volcanically active part of the planet’s crust entering the bottom of a large sea long ago.

    “Even if we never find evidence that there’s been life on Mars, this site can tell us about the type of enviro...

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    Mars Gullies likely Not formed by Liquid Water

    August 12, 2016, Categories  Astronomy/Space

    The highly incised gullies on the eastern rim of the 150 km × 125 km Hale crater (located at 35.7°S, 323.4°E) as seen in the HiRISE image (top) resemble gullies on Earth and appear to have been carved by liquid water. However, when the gullies are observed with the addition of mineralogical information from CRISM (bottom), unaltered mafic material (light blue) from the crater rim is carved and transported downslope along the gully channels. No hydrated minerals are observed within the gullies in the CRISM image, indicating limited to no interaction of the mafic material with liquid water. These findings suggest that a different mechanism that does not involve liquid water may be responsible for carving these gullies on Mars. The top image is a HiRISE image (HiRISE PSP_002932_1445), and the bottom image is the same HiRISE image with a CRISM mineral map (CRISM FRT00004AF7) overlaid on top. Credit: NASA/JPL/Univ. of Arizona/JHUAPL

    The highly incised gullies on the eastern rim of the 150 km × 125 km Hale crater (located at 35.7°S, 323.4°E) as seen in the HiRISE image (top) resemble gullies on Earth and appear to have been carved by liquid water. However, when the gullies are observed with the addition of mineralogical information from CRISM (bottom), unaltered mafic material (light blue) from the crater rim is carved and transported downslope along the gully channels. No hydrated minerals are observed within the gullies in the CRISM image, indicating limited to no interaction of the mafic material with liquid water. These findings suggest that a different mechanism that does not involve liquid water may be responsible for carving these gullies on Mars...

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