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The Martian satellite Phobos is criss-crossed by linear grooves and crater chains whose origin is unexplained. Anomalous grooves are relatively young, and crosscut tidally predicted stress fields as Phobos spirals

The Martian satellite Phobos is criss-crossed by linear grooves and crater chains whose origin is unexplained. Anomalous grooves are relatively young, and crosscut tidally predicted stress fields as Phobos spirals towards Mars. Here we report strong correspondence between these anomalous features and reaccretion patterns of sesquinary ejecta from impacts on Phobos. Escaping ejecta persistently imprint Phobos with linear, low-velocity crater chains (catenae) that match the geometry and morphology of prominent features that do not fit the tidal model.

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    Date Created
    • 2016-08-30
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  • Text
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    Identifier
    • Digital object identifier: 10.1038/ncomms12591
    • Identifier Type
      International standard serial number
      Identifier Value
      2041-1723
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    Nayak, M., & Asphaug, E. (2016). Sesquinary catenae on the Martian satellite Phobos from reaccretion of escaping ejecta. Nature Communications, 7, 12591. doi:10.1038/ncomms12591

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