article_snippet: Hubble Space Telescope icy .
article_snippet: that Saturn's moon Enceladus has hot springs beneath Saturn's moon Enceladus icy .
article_snippet: The amount of rocking of Saturn's moon Enceladus's magnetic field suggests that Saturn's moon Enceladus has hot springs beneath its icy.
article_snippet: (150-km) crust of mostly ice. '