hypervelocity impact

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The impact of an object into a target at a speed that greatly exceeds the speed of sound in the struck body. Typically, in solids, this limit occurs at around 4 km/s. At these speeds solid rock behaves like a fluid. Hypervelocity impacts produce craters that are generally circular, and far larger than the impacting body.

Subjects: Astronomy and Astrophysics.

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