Question
Identify the planet and its moon with the help of the following clue:
"It is the largest of this planet's 8 moons. It is the coldest place in all the solar system -4950 C. Despite its ice-covered surface it shoots powerful jets of liquid oxygen into the face of Universe, like natural geysers on Earth. It is the only satellite which orbits its planet in the opposite direction to the movement of its rotation.