Scientists using the Dark Energy Spectroscopic Instrument (DESI) have found hints that dark energy in the universe changes over time.
DESI helped create the largest 3D map of the universe, showing the influence of dark energy over the past 11 billion years.
When combined with other measurements, there are indications that the impact of dark energy may be weakening over time, deviating from the standard cosmological model.
The dataset from DESI, including data on 4 million stars, 13.1 million galaxies, and 1.6 million quasars, is now available to astronomers and the public.