What is runaway speed?

Runaway speed refers to the minimum speed an object must reach to escape the gravitational pull of a celestial body, such as a planet or moon, without any further propulsion. This speed varies depending on the mass and radius of the body being escaped from. For Earth, the runaway speed is approximately 11.2 kilometers per second (about 25,000 miles per hour). Achieving this speed allows an object to break free from the body's gravitational influence.