In 2012, the Dark Energy Spectroscopic Instrument (DESI) was commissioned to measure the effect of dark energy, the mysterious force driving the expansion of the cosmos. Since then, the DESI Legacy Imaging Surveys have obtained optical images of tens of millions of galaxies and quasars, includin...
Source: [Phys.org](https://phys.org/news/2026-09-desi-legacy-imaging-survey-largest.html)