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Thread: There’s Evidence That Mars Once Had an Atmosphere With Less Oxygen. A Possible Biosig

  1. #1
    Join Date
    Jul 2003
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    There’s Evidence That Mars Once Had an Atmosphere With Less Oxygen. A Possible Biosig

    Remote sensing is only useful if scientists have an idea of what they are looking at.* That knowledge is especially important for remote sensing applications on other planets, such as Mars, where it is extraordinarily difficult to collect information about an observed object in any other way.* To make up for the lack of ability …
    Continue reading "There’s Evidence That Mars Once Had an Atmosphere With Less Oxygen. A Possible Biosignature For Life?"
    The post There’s Evidence That Mars Once Had an Atmosphere With Less Oxygen. A Possible Biosignature For Life? appeared first on Universe Today.


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  2. #2
    Join Date
    Dec 2020
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    Argon could disappear from the Martian atmosphere only under the influence of the solar wind - a stream of mega-ionized particles flowing from the solar corona into the surrounding space. The magnitude of the loss of argon by the Martian atmosphere over the past 4.5 billion years can be calculated by determining the proportions of heavy and light isotopes of the atom. The light isotope 36Ar volatilizes faster than the heavy isotope 38Ar, as a result of which heavier isotopes predominate in the argon remaining in the atmosphere.

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