Space navigation refers to the methods and techniques used to determine the position and course of spacecraft as they travel through space. This involves using various tools and technologies, such as GPS, star trackers, and inertial navigation systems, to calculate the spacecraft's trajectory and ensure it reaches its intended destination. Navigating in space is challenging due to the vast distances and lack of physical landmarks. Spacecraft often rely on celestial navigation, which involves observing stars and other celestial bodies, to guide their path. Accurate navigation is crucial for missions to planets, moons, and other celestial objects, ensuring successful landings and operations.