Earth gravity field

Earth's gravity field is a way to describe how gravity pulls objects toward the planet's center. It's not perfectly uniform; factors like mountains, oceans, and underground structures cause small variations. These variations mean gravity is slightly stronger or weaker in different locations. The gravity field influences everything from satellite orbits to how water and air move around the planet. Scientists map the Earth's gravity field to better understand its structure, study changes over time, and improve navigation and exploration. Overall, it’s a dynamic, changing system that reflects Earth's internal makeup and surface features.