NASA astronauts Sunita Williams and Butch Wilmore, who travelled to ISS aboard Starliner, have been stuck in space for five months. Their diet includes breakfast cereal with powdered milk, pizza, shrimp cocktails, roast chicken and tuna. It has very little fresh fruit and vegetables. The astronauts reheat pre-cooked meat and eggs and use water with dehydrated soups, stews and casseroles.