The detection of silicon-rich particles originating from Saturn's moon Enceladus suggests that water–rock interactions are currently occurring inside it — the first evidence of ongoing hydrothermal activity beyond Earth. See Letter p.207
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Tobie, G. Enceladus' hot springs. Nature 519, 162–163 (2015). https://doi.org/10.1038/519162a
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DOI: https://doi.org/10.1038/519162a
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