Ongoing hydrothermal activities within Enceladus

@article{Hsu2015OngoingHA,
  title={Ongoing hydrothermal activities within Enceladus},
  author={Hsiang-Wen Hsu and Frank Postberg and Yasuhito Sekine and Takazo Shibuya and Sascha Kempf and Mih{\'a}ly Hor{\'a}nyi and Antal Juh{\'a}sz and Nico Altobelli and Katsuhiko Suzuki and Yuka Masaki and Tatsu Kuwatani and Shogo Tachibana and Sin-iti Sirono and Georg Moragas-Klostermeyer and Ralf Srama},
  journal={Nature},
  year={2015},
  volume={519},
  pages={207-210}
}
Detection of sodium-salt-rich ice grains emitted from the plume of the Saturnian moon Enceladus suggests that the grains formed as frozen droplets from a liquid water reservoir that is, or has been, in contact with rock. Gravitational field measurements suggest a regional south polar subsurface ocean of about 10 kilometres thickness located beneath an ice crust 30 to 40 kilometres thick. These findings imply rock–water interactions in regions surrounding the core of Enceladus. The resulting… 
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