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Under pressure: Ramp-compression smashes record

In the first university-based planetary science experiment at the National Ignition Facility (NIF), researchers have gradually compressed a diamond sample to a record pressure of 50 megabars (50 million times Earth's atmospheric pressure). By replicating the conditions believed to exist in the cores of several recently discovered "super-Earths" -- extra-solar planets three to 20 times more massive than Earth -- the experiments could provide clues to the formation and structure of these and other giant planets, as well as the exotic behavior of materials at ultrahigh densities.

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