Trajectory is a specialized skill that refers to the path or trajectory of an object or system over time. This skill requires an understanding of a variety of data and factors, including physical laws, mathematical models, and data analysis techniques. Trajectory analysis is essential in many fields, including physics, engineering, aviation, and space exploration. It involves predicting and analyzing the movement of objects, such as aircraft, satellites, and spacecraft, as well as predicting the behavior of systems over time, such as economic models and public health projections.