Orbital speed refers to the velocity at which an object must travel to maintain a stable orbit around a larger body, such as a planet or star. This speed depends on the mass of the central body and the distance from it. For example, the closer an object is to the Earth, the faster it must move to stay in orbit. In space, different celestial bodies have varying orbital speeds. For instance, the International Space Station orbits the Earth at about 28,000 kilometers per hour (17,500 miles per hour). Understanding orbital speed is crucial for space missions and satellite deployment.