Prepare for them to find life out there. Extremely slow life given the sheer coldness (Lack of energy) involved. Think about our arrogance. We are unique. I don’t believe it. Or possibly we are.... hot world things dont survive.
Ahhhh hell I have a whole book plot in my head right now.....
I, for one, welcome our Plutonian overlords.
Life requires an energy source to power activity on the molecular level. The combining of amino acids and so forth. From what we can tell it also requires something liquid—water is of course ideal but there may be substitutes on the colder side, such as methane. Certainly our idea of what constitutes life may be narrow, but can we make it so broad that snow balls are also considered life? That seems to be the direction that some are headed.