Space mission planning involves the detailed preparation and organization of a space mission, ensuring that all objectives are met efficiently. This process includes defining the mission's goals, selecting the appropriate spacecraft, and determining the launch window. Engineers and scientists work together to create a timeline and budget, considering factors like fuel requirements and potential risks. Additionally, mission planning incorporates the selection of crew members, if applicable, and the design of experiments or tasks to be conducted in space. Collaboration with organizations like NASA or ESA is often essential, as they provide expertise and resources to support the mission's success.