Mission specialists are trained professionals who play a crucial role in space missions, particularly in programs like NASA. They are responsible for specific tasks during a mission, such as conducting experiments, operating equipment, and managing payloads. Their expertise often comes from backgrounds in science, engineering, or medicine. These specialists work alongside other crew members, including pilots and commanders, to ensure the mission's success. They undergo extensive training to prepare for the unique challenges of space travel, including simulations and hands-on practice with spacecraft systems. Their contributions are vital for achieving mission objectives and advancing scientific knowledge.