I doubt we'll see it in many other planets. Mars is by far the most likely planet in our solar system to harbor life, outside of Earth obviously. If you talk of

I doubt we'll see it in many other planets. Mars is by far the most likely planet in our solar system to harbor life, outside of Earth obviously. If you talk of moons, however, then we get into many, many more candidates that could potentially harbor some kind of microbe or multi-cellular water creature.