Gravity fields refer to the distribution of gravitational force in a particular region of space, typically surrounding a celestial body such as a planet or star. Research in this area focuses on measuring and mapping these gravitational fields to better understand the mass distribution and structure of celestial objects, as well as their gravitational interactions with other objects. By studying gravity fields, researchers can gain insights into the internal structure and composition of planets, moons, and asteroids, as well as the dynamics of their orbits and interactions with other celestial bodies. Gravity field research also plays a crucial role in various applications, such as satellite navigation, geodesy, and mineral exploration. Methods used in gravity field research include satellite missions equipped with gravity-measuring instruments, such as accelerometers or gravimeters, as well as ground-based observations and numerical modeling. Overall, gravity field research contributes to our broader understanding of the universe and helps us navigate and explore the cosmos more effectively.