BEIJING — On 18 December 2020, Olivier Witasse (ESA) gave an online seminar on the JUpiter ICy Moons Explorer (JUICE) mission of the European Space Agency. Dr. Witasse's lecture represented the fifth of the ISSI-BJ "On Things to Come" series of webinars that addresses ongoing as well as future space missions by inviting renowned scientists from different countries, institutes, and space agencies.