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    Mars Express radio science experiment

    Date: 26 Apr 2012
    Copyright: Royal Observatory of Belgium

    As the spacecraft flies over a volcano, it experiences an attraction towards the elevated mass. Mars Express measures these perturbations in the spacecraft's velocity that induce a detectable Doppler shift on the radio signal between the spacecraft and Earth tracking ground stations. These measurements can be translated into high-precision values for subsurface density variations, providing insight into the thermal history of Mars.


    Last Update: 27 Apr 2012

    • Shortcut URL
    • http://sci.esa.int/jump.cfm?oid=50302
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    • See also
    • Mars Express explores the roots of Martian volcanoes
    • Related Publications
    • Beuthe, M., et al. [2012]

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