How much food does an astronaut need every day?

An astronaut typically requires about 3,000 to 3,600 calories per day, depending on their activity level and mission requirements. This caloric intake is necessary to maintain energy levels in the challenging environment of space. The diet usually consists of a variety of freeze-dried, packaged, and thermally stabilized foods, carefully selected to ensure proper nutrition and hydration while in orbit. Nutritional needs may also vary based on individual health and the specific objectives of the space mission.