Space food: food eaten by astronauts during space flight.

What astronauts eat in space is called space food because it is developed according to the special environment of astronauts' life, combined with astronauts' taste, digestion and absorption ability and special eating method in space. It can be said that space food is a special food developed for a specific environment and a specific population. This kind of food is made according to the space diet that meets the dietary standards. It must contain sufficient and perfect scientific nutrition, such as protein, fat and sugar. And ensure that it contains major inorganic elements such as calcium, phosphorus, magnesium and potassium, and trace elements such as iron, zinc, selenium and iodine, as well as two fat-soluble vitamins (vitamins A and E) and various water-soluble vitamins (vitamins B and C, etc.). ).