Life could be likelier on icy planets than rocky ones

In the hunt for extra-terrestrial life, scientists tend to take what is known as the “low-hanging fruit approach.” This consists of looking for conditions similar to what we experience here on Earth, which include at oxygen, organic molecules, and plenty of liquid water. Interestingly enough, some of the places where these ingredients are present in abundance include the interiors of icy moons like Europa, Ganymede, Enceladus and Titan.

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