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  1. Closing the Abyss: The Untold Fate of Earth's Deepest Hole

    Closing the Abyss: The Untold Fate of Earth's Deepest Hole

    19
  2. Subsurface Oceans on Mars? NASA’s InSight Uncovers Vast Reservoir of Liquid Water

    Subsurface Oceans on Mars? NASA’s InSight Uncovers Vast Reservoir of Liquid Water

    46
  4. The Kola Superdeep Borehole: Sounds from the Underworld

    The Kola Superdeep Borehole: Sounds from the Underworld

    21