http://www.newsweek.com/enceladus-complex-organic-molecules-found-saturns-moon-boosting-hopes-finding-998181

Saturn’s sixth largest moon, Enceladus, is gradually gaining a reputation as the most promising place in the solar system to search for alien life.

The brilliant white world has a global ocean of salty, liquid water below its frozen surface that has existed for billions of years—more than enough time for life to emerge. Furthermore, it is rich in hydrothermal activity and organic molecules that may provide the warmth and nutrients needed for organisms, as we understand them, to evolve.