it 's a downright balmy ocean .
it looks as though the most life - friendly habitat ever discovered outside of earth is enceladus — saturn 's sixth - largest moon .
this june 28 , 2009 image provided by nasa , taken by the international cassini spacecraft , shows enceladus , one of saturn ’s moons .
astrophysicists working with nasa 's saturn sweeping cassini spacecraft have just announced that enceladus has a warm ocean at its southern pole with ongoing hydrothermal activity — the first ever discovered outside of earth .
 
the research comes from cassini spacecraft , which orbits saturn and its numerous moons from orbit .
 
a new study published online wednesday , march 11 , 2015 , in the journal ... ( associated press ) if confirmed , it would make the moon enceladus ( ehn - sehl'-uh - duhs ) the only other known body in the solar system besides earth where hot water and rocks interact underground .
from earth it looks tiny and cold , and yet it 's not a dead hunk of rock .