Physicists wage a cosmic battle on the nature of dark energy

Does black energy change, or is it just the same thing? Last month, astronomers announced the surprising discovery that dark energy – which is supposed to cause the accelerated expansion of the universe – could weaken over time. This forced physicists to consider upsetting the standard cosmological model of the universe, but now, some researchers say it can be premature.

Since he started scanning the sky in 2021, the spectroscopic instrument of black energy (desi) in Arizona has carefully measured the distances between millions of …