RT journal article T1 Drawing lines in a borderless outer space: legal challenges to the establishment of safety zones A1 Cinelli, Claudia K1 Non-appropriation K1 free access K1 safety zone K1 no harmful interference K1 due regard obligation K1 principio de no apropiación K1 libre acceso K1 zona de seguridad K1 prevención de contaminación nociva AB International outer space law, primarily developed in the late 1960s and 1970s, increasingly reveals its limitations in addressing the complexity and scale of contemporary space activities. As of 31 December 2024, approximately 18,070 functional space objects had been officiallyregistered —representing nearly 89% of all launches since 1957— underscoring the intensity andacceleration of orbital operations. Concurrently, multiple missions targeting lunar exploration andutilization are actively underway. This rapid evolution has exposed significant normative gaps, particularly concerning the legal status and operationalization of safety zones. Such zones are gainingrelevance as instruments to mitigate orbital congestion, prevent harmful interference, safeguard critical infrastructure and ensure the safe execution of high-risk operations, including the exploitationof celestial resources. Notably, safety zones have not been established through binding multilateralinstruments, but have instead emerged from the operational practices of spacefaring actors, as wellas from policy measures articulated in soft law instruments. Considering this, the main researchquestion addressed is: To what extent are the establishment and enforcement of safety zones lawfulunder the current corpus of international space law? The study seeks to highlight the urgent needfor coherent, equitable, and enforceable international rules capable of addressing these emergingregulatory challenges. PB Editorial UCA SN 2341-0868 YR 2025 FD 2025 LK http://hdl.handle.net/10498/37575 UL http://hdl.handle.net/10498/37575 LA eng DS Repositorio Institucional de la Universidad de Cádiz RD 10-may-2026