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Astronomy

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    $\begingroup$ Venus has more gravity and active volcanos, if I am not mistaken. In a sort of ironic way, the thick atmosphere actually ends up helping reduce its loss. The upper part ionizes due to the ionizing radiation from the Sun and solar wind, which creates an induced ionosphere. This generates inductive electromagnetic fields that lead to bow shock, which then keeps the solar wind from directly eroding the upper atmosphere... $\endgroup$
    – honeste_vivere
    Commented Oct 14, 2022 at 13:14
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    $\begingroup$ en.wikipedia.org/wiki/Atmosphere_of_Venus#Induced_magnetosphere "Between the magnetopause and ionopause there exists a magnetic barrier—a local enhancement of the magnetic field, which prevents the solar plasma from penetrating deeper into the Venusian atmosphere" $\endgroup$
    – Mazura
    Commented Oct 15, 2022 at 19:36