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Physicists now question the fate of the Universe
For nearly 25 years, we thought we knew how the Universe would end. Now, new measurements point to a profoundly different conclusion.
From this 2022 publication, there is no evidence favoring its evolution across either time or space, but any deviation from w = -1 and w_a or w’ equaling 0 would totally alter the presumed fate of our Universe: something that 2024-era BAO data suddenly suggests. The raw data from the 2024 DESI collaboration’s key publications has been binned into several different redshifts and plotted against the expectations from a “vanilla” dark energy model. It’s as though this baryon acoustic oscillation (BAO) feature, easily detectable in large-area surveys of the sky that spectroscopically measure the properties of galaxies, hasn’t been lengthening — particularly in recent times — as much as one would expect it to in a Universe where dark energy is a pure cosmological constant.
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