Which moon to shoot for?

The article discusses the rare chance by planetary scientists to choose the destination of their next space mission. An example is given of planetary scientist Jonathan Lunine's first glimpse of Saturn's moon Titan, his thoughts on whether or not he will experience something similar in his lifetime, and plans by the U.S. National Aeronautics and Space Administration (NASA) and European Space Agency (ESA) to choose their next mission. Topics include the debate regarding the exploration of Jupiter's moon Europa or revisiting Titan, how scientists are attempting to combat the potential harm to life and spacecraft electronics from radiation, and the cost of radiation protection. Also discussed is the potential use of a hot-air balloon to study Titan's surface.