The National Aeronautics and Space Administration (NASA) is planning a mission. The mission will be to Mars. It will take place
in the 2030s. Six to eight astronauts will take part. NASA is also planning their menus. The astronauts will cook while they are in space. They will not want to eat the same thing each day. So far, NASA has planned 100 meals. All of the meals are healthful. NASA says that this is important. That is because the mission will be long. The astronauts will have many different _________.
