Image Credit: NASA/JPL-Caltech http://www.jpl.nasa.gov/visions-of-the-future/ Water: the ultimate resource. We depend on it to survive, but Earth is not the only place with a substantial amount of water. Buckle up, because I want to tell you about my favorite moon, Europa. Europa is one of the moons of Jupiter. It is approximately 4.5 billion years old (about…