Superheated Gold: Redefining Temperature at Extreme Conditions

In this Deep Dive, we explore SLAC researchers' breakthrough: heating gold to 14 times its melting point with a fast laser and diagnosing its temperature directly with ultra-bright X-rays. This challenges the long-held entropy catastrophe, suggesting there may be no universal cap on how hot a solid can get when its expansion is controlled. We unpack what this means for fusion research, spacecraft heat shields, and our ability to study matter under extreme conditions, drawing on fresh Nature findings and related Gizmodo coverage.

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