Lunch: Chowder, cheese, chocolate and cocoa juice. Dinner: tuna salad, bean juice broth, chocolate snacks, pretzels, pineapple and grape juice. This is the recipe of the astronauts on the American Apollo moon landing spacecraft one day. It provides a more detailed recipe composition of astronauts on the space station "Salute" of the former Soviet Union. These are all conventional space diets, that is, astronauts' "routine meals" under normal flight conditions. In addition, there is a special emergency diet to eat through the helmet feeding hole when wearing a pressurized spacesuit, and a spare life-saving diet when the spacecraft returns to the ground without rescue.