Every year on the occasion of the Legal Subcommittee of the UNCOPUOS, the IISL and ECSL organize the annual joint Symposium for delegates and observers. The IISL/ECSL Joint Symposium traditionally takes place on the first day of the respective session of the Legal Subcommittee. The Symposium gathers prominent scholars and practitioners to discuss a topical theme of space law. See below for the topics of the most recent years of the IISL/ECSL Symposium.