Extremophiles are organisms that can live in extreme environments. There are many different environments in which extremophiles live in, but I am going to talk about one of them: pyschrophiles!
Psychrophiles are organisms that have adapted to perpetually freezing environments. These environments include deep seas and polar regions. These bacteria survive in these temperatures by desiccating at extremely low temperatures. This means that they remove moisture from themselves (cool) at a slow rate.
I find these extremely interesting because it could expand where life could exist in our own galaxy like in planets beyond the frost line. What if these organisms could survive on Neptune? Or even Pluto? There are so many possibilities!