SMRTR Science & EngineeringMay 1, 2025Scientific American

Why ‘Evolving’ Dark Energy Worries Some Physicists

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The Dark Energy Spectroscopic Instrument (DESI) has revealed surprising data suggesting dark energy may be weakening over time, challenging the long-held belief that it's constant. This finding has sparked debate among astronomers and physicists, with some proposing alternative explanations like dark matter decay. The unexpected results could lead to new understanding of the universe's evolution and fundamental physics, though more data and analysis are needed to reach a consensus.

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