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New 3D map of Universe could solve dark energy mystery

The Dark Energy Spectroscopic Instrument (DESI) has completed its five-year survey, producing the largest-ever 3D map of the universe using data from tens of millions of galaxies and quasars to study

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The Dark Energy Spectroscopic Instrument (DESI) has completed its five-year survey, producing the largest-ever 3D map of the universe using data from tens of millions of galaxies and quasars to study cosmic expansion over the past 11 billion years. The Ars Technica article reports on DESI finishing its survey on schedule, with its accumulated data strengthening hints that dark energy — the mysterious force driving the universe's accelerating expansion — may not be constant over time, potentially challenging the standard Lambda CDM model of cosmology. If confirmed, an evolving dark energy would represent a major paradigm shift in physicists' understanding of the universe's fate and fundamental structure.

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Source: Ars Technica | 2026-04-15

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