The Jupiter moon, Europa is 390 million miles away from Earth. In 2025, the NASA Europa Clipper mission launches and is estimated to arrive in Jupiter’s orbit by 2031. Why Europa? Underneath its radiated surface, the icy moon is believed to host a vast ocean similar to Earth’s that has ample conditions for complex life. Author David W. Brown joins Viewpoints this week to shed some light on the Jovian moon and some of the challenges that came with the lengthy approval of this deep space mission.