Gravity does not cease at the Earth's core; rather, it is a force that acts on all masses throughout the universe. At the center of the Earth, the gravitational forces from surrounding mass effectively cancel each other out, resulting in a net force of zero on a particle located there. This means that while gravity is still present, it does not exert a force on an object at the core. The concept of gravity "stopping" is misleading, as gravitational interactions continue to exist regardless of location. Understanding gravity requires recognizing its omnipresence and the balance of forces at play.