###### Abstract  
This paper investigates the convergence of risk, sustainability, and supply chain in space missions, including a review of fundamental concepts, the introduction of a multi-objective conceptual optimization model, and the presentation of a practical approach. Risks associated with space missions include technical, human, launch, space environment, mission design, budgetary, and political risks. Sustainability considerations must be incorporated into mission planning and execution to ensure the long-term viability of space exploration. The study emphasizes the importance of considering environmental sustainability, resource use, ethical concerns, long-term planning, international collaboration, and public outreach in space missions. It emphasizes the significance of reducing negative environmental consequences, increasing resource use efficiency, and making responsible and ethical actions. The paper offers a multi-objective optimization conceptual model that may be used to evaluate and choose sustainable space mission tactics. This approach considers a variety of elements, including environmental effects, resource utilization, mission cost, and advantages for society. It provides a systematic decision-making approach that examines trade-offs between different criteria and identifies optimal conceptual model solutions that balance risk, sustainability, and supply chain objectives. A practical approach is also offered to demonstrate the use of the multi-criteria optimization conceptual model in a space mission scenario. The practical approach demonstrates how the model can aid in the development of mission strategies that minimize risks, maximize resource consumption, and fit with sustainability goals. Overall, this paper delivers a multi-criteria optimization conceptual model and provides a space mission planning practical approach, as well as an overview of the interaction between risk, sustainability, and supply chain in space mission organization, planning, and execution. space mission; risk; sustainability; supply chain; multi-objective optimization; environmental impact; ethical considerations 202331223  
momentous occasion made history by putting the first artificial object into orbit around the Earth and opening the door for later space exploration missions. Space missions have accomplished important milestones throughout history, such as the Apollo program's successful Moon landing in 1969. This significant accomplishment showed how willing we are as a species to investigate and push the limits of what we know about the universe. Heading to the decades to come, space missions hold immense promise for scientific discovery and exploration. Present attempts are centered on expeditions to Mars, particularly the Mars Rover missions, with the eventual objective of human colonization of the Red Planet. These missions aim to unearth potential evidence of life, investigate the planet's geology, and prepare for future human trips. The upcoming scope of space missions involves the discovery of other celestial bodies, such as the moons of Jupiter and Saturn, which are believed to possess conditions favorable for extraterrestrial life to exist. Missions such as the Europa Clipper and the projected Enceladus Life Finder seek to examine these moons and determine their possibility of being habitable. In addition to scientific discovery, space missions have grown into commercial enterprises, with private corporations such as SpaceX and Blue Origin playing key roles. These businesses are building reusable rocket systems, such as SpaceX's Starship, to permit frequent and attainable space travel, bringing up prospects for space tourism and the construction of commercial space settlements. In general, the historical background of space missions demonstrates great successes in space exploration, while the future scope offers even more fascinating discoveries and breakthroughs in our understanding of the universe.