How much energy does an astronaut need in space?

Astronauts in space require about 3,000 to 3,500 calories per day, depending on their activity level and individual metabolism. This energy intake supports their physical activity, bodily functions, and adaptation to microgravity conditions. Nutritional needs are carefully planned to ensure they receive a balanced diet, which includes carbohydrates, proteins, and fats, along with essential vitamins and minerals. Proper nutrition is crucial for maintaining health and performance during missions.