A gravitational field is a region around a mass where other masses experience a force of attraction. This concept helps explain how objects like planets, stars, and moons interact with each other. The strength of the gravitational field depends on the mass of the object creating it and the distance from that object. In simple terms, the Earth creates a gravitational field that pulls objects toward its center, which is why we stay grounded. The force of gravity is what keeps the Moon in orbit around the Earth and the Earth in orbit around the Sun.