hypervelocity impact

physics

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July 20, 2026

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A hypervelocity impact occurs when an object strikes a planetary surface at extremely high speeds, typically tens of kilometers per second. This is significantly faster than the speed of sound and is comparable to the force of an atomic bomb explosion. The immense kinetic energy released vaporizes, melts, and crushes material at the impact site.1

The process begins with shock waves that excavate material, forming a depression. For smaller impacts, this results in a simple crater. Larger impacts undergo a modification stage where the crater collapses, creating complex features like central peaks or rings.1

While Earth has fewer visible impact craters due to geological processes like erosion and volcanism, these impacts are a fundamental geologic process throughout the solar system, shaping the surfaces of planets, moons, and asteroids.1

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meteorite crater
The impact-cratering process
…extreme speeds is called a hypervelocity impact. Although the resulting depression may bear some resemblance to the hole that results from throwing a pebble into a sandbox, the physical process that occurs is actually much closer to that of an atomic bomb explosion. A large meteorite impact releases an enormous…
Read More
…extreme speeds is called a hypervelocity impact. Although the resulting depression may bear some resemblance to the hole that results from throwing a pebble into a sandbox, the physical process that occurs is actually much closer to that of an atomic bomb explosion. A large meteorite impact releases an enormous…
Read More