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    Mars tagged posts

    Sun: Scientists detect Water Vapour Emanating from Mars

    February 12, 2021, Categories  Astronomy/Space

    Scientists detect water vapour emanating from Mars
    The ESA-Roscosmos ExoMars Trace Gas Orbiter studies water vapour and its components as it rises through the atmosphere and out into space. By looking specifically at the ratio of hydrogen to its heavier counterpart deuterium, the evolution of water loss over time can be traced. Credit: (C) ESA

    Researchers said Wednesday they had observed water vapour escaping high up in the thin atmosphere of Mars, offering tantalising new clues as to whether the Red Planet could have once hosted life.

    The traces of ancient valleys and river channels suggest liquid water once flowed across the surface of Mars. Today, the water is mostly locked up in the planet’s icecaps or buried underground.

    But some of it is vaporising, in the form of hydrogen leaking from the atmosphere, according to the new r...

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    Water on Ancient Mars

    November 1, 2020, Categories  Astronomy/Space

    A dark rock
    Black Beauty. Martian meteorite NWA 7533 is worth more than its weight in gold. © NASA/Luc Labenne

    Analysis of a Martian meteorite reveals evidence of water 4.4 billion years ago. Certain minerals from the Martian crust in the meteorite are oxidized, suggesting the presence of water during the impact that created the meteorite. The finding helps to fill some gaps in knowledge about the role of water in planet formation.

    Several years ago, a pair of dark meteorites were discovered in the Sahara Desert. They were dubbed NWA 7034 and NWA 7533, where NWA stands for North West Africa and the number is the order in which meteorites are officially approved by the Meteoritical Society, an international planetary science organization...

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    Mars: Simulations of Early Impacts produce a Mixed Mars Mantle

    February 16, 2020, Categories  Astronomy/Space

    Early Mars after impact, showing projectile materials leaving the planet
    Courtesy of Southwest Research Institute A Southwest Research Institute team performed high-resolution, smoothed-particle simulations of a large, differentiated projectile hitting early Mars after its core and mantle had formed. The projectile’s core and mantle particles are indicated by brown and green spheres respectively, showing local concentrations of the projectile materials assimilated into the Martian mantle.

    The early solar system was a chaotic place, with evidence indicating that Mars was likely struck by planetesimals, small protoplanets up to 1,200 miles in diameter, early in its history...

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    NASA’s Treasure Map for Water Ice on Mars

    December 15, 2019, Categories  Uncategorized

    This rainbow-colored map shows underground water ice on Mars. Cool colors represent less than one foot (30 centimeters) below the surface; warm colors are over two feet (60 centimeters) deep. Sprawling black zones on the map represent areas where a landing spacecraft would sink into fine dust. The outlined box represents the ideal region to send astronauts for them to be able to dig up water ice.

    NASA has big plans for returning astronauts to the Moon in 2024, a stepping stone on the path to sending humans to Mars. But where should the first people on the Red Planet land?

    A new paper published in Geophysical Research Letters will help by providing a map of water ice believed to be as little as an inch (2.5 centimeters) below the surface.

    Water ice will be a key consideration fo...

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