article_snippet: Nasa's Cassini spacecraft has provided scientists the first clear evidence that Saturn's moon Enceladus exhibits signs of present-day hydrothermal activity - similar to that seen in the deep oceans on Earth.
article_snippet: Some particles settle around Saturn, replenishing Saturn biggest ring.
article_snippet: These findings add to the possibility that Enceladus, which contains a subsurface ocean and displays remarkable geologic activity, could contain environments suitable for living organisms,' said John Grunsfeld astronaut and associate administrator of Nasa's Science Mission Directorate in Washington. '
article_snippet: The authors point out that Cassini's gravity measurements suggest Enceladus' rocky core is quite porous, which would allow water from the ocean to percolate into the interior.
article_snippet: This June 28, 2009 image provided by NASA, taken by the international Cassini spacecraft, shows Enceladus, one of Saturn¿s moons.
article_snippet: Cassini first revealed active geological processes on Enceladus in 2005 with evidence of an icy spray issuing from the moon's south polar region and higher-than-expected temperatures in the icy surface there.
highlights_snippet: Experts describe 'remarkable' discovery on Saturnian moon .
  
highlights_snippet: Believe Saturnian moon could still have life in vast undersea oceans .
  