hypervelocity impact A collision of an object into a surface at a speed of at least 1 to 2 km/s, which results in the impact rock behaving like a fluid. Hypervelocity impacts result in craters that are generally circular, as the crater is typically much larger than the impacting body. Related category • CRATERS Also on this site: Encyclopedia of Alternative Energy & Sustainable Living Encyclopedia of History Transport Concepts & Designs (partner site) |