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Mars moon mystery: Strange structures found inside 'fearful' Phobos
[Space.com] Europe's Mars Express spacecraft has peered deeper into the subsurface of the Martian moon Phobos than ever before, finding hints of unknown structures that could be clues as to the moon's origin.

Mars Express, which is a 19-year-veteran spacecraft in orbit around Mars, came within 51.6 miles (83 kilometers) of Phobos on Sept. 22, 2022 and was able to probe beneath the moon's surface using upgraded software on its MARSIS instrument (Mars Advanced Radar for Subsurface and Ionosphere Sounding).

Understanding the interior structure of Phobos could be key in solving the mystery of its origin. "We are still at an early stage in our analysis, but we have already seen possible signs of previously unknown features below the moon's surface," said Andrea Cicchetti, who is a member of the MARSIS science team at INAF, the Italian National Institute for Astrophysics, in a statement(opens in new tab).
Posted by: DarthVader 2022-11-02
http://www.rantburg.com/poparticle.php?ID=648371