The Tunis Science City organized a lecture about “Exploration of water in the Solar System: a relentless chase for life”, in collaboration with the doctoral school of life and earth sciences and technologies at the faculty of sciences of Tunis. The lecture was given by Doctor Essam Heggy, a ROSETTA co-investigator at NASA's Jet Propulsion Laboratory, on Saturday, November 12, at 10.00 am, at Ibn Khaldoun auditorium.