The fate of the Universe might not be as dark and empty as cosmologists have long suspected. That’s one potential implication emerging from an innovative project that has produced some of the biggest maps ever made of the Universe.
At a meeting of the American Physical Society in Sacramento, California, in early April, researchers released initial results from the Dark Energy Spectroscopic Instrument (DESI), based at the Kitt Peak National Observatory near Tucson, Arizona. DESI started mapping the Universe in 3D in 2020 and was designed to measure the elusive force, known as dark energy, that is pushing galaxies apart.
The surprising early results suggest that dark energy could be weakening over time.
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