Guidance Navigation and Control (GNC) is a field in aerospace engineering that focuses on the methods and systems used to direct and manage the movement of vehicles, such as spacecraft and aircraft. It involves three main components: guidance, which determines the desired path; navigation, which tracks the vehicle's current position; and control, which adjusts the vehicle's trajectory to follow the desired path. GNC systems utilize various sensors and algorithms to ensure accurate positioning and maneuvering. For example, GPS is often used for navigation, while inertial measurement units (IMUs) help track motion. Together, these technologies enable safe and efficient operation of vehicles in complex environments.