Space mission planning involves the detailed planning and coordination of all aspects of a mission to space, including the design and development of spacecraft, selection of launch vehicles, trajectory planning, communication strategies, and mission operations. This research area focuses on optimizing mission objectives, resources, and risks to ensure successful execution of space missions. Key considerations include determining the mission goals, identifying potential obstacles, evaluating technologies, managing budgets, and developing contingency plans. Space mission planning plays a critical role in the success of space exploration missions, both manned and unmanned, and is essential for achieving scientific, commercial, and exploration objectives in space.