Summary:
- The Dark Energy Spectroscopic Instrument (DESI) has produced the most comprehensive 3D map of the universe to date, tracking the positions of millions of galaxies and quasars over 11 billion years of cosmic history.
- Preliminary data suggests that dark energy—the mysterious force driving the expansion of the universe—may not be a constant, but could be evolving over time, potentially challenging the standard "Lambda-CDM" model of cosmology.