30 July 2026 Wynne Turner (Ohio State) The Key Paper released today presents new measurements from the full distribution of hydrogen gas traced by the Lyman-alpha forest, yielding the most precise cosmological constraints from this probe to date. Background The quasars observed by DESI emitted the light we see today around 11 billion years ago. […]

by Nico Schuster (CPPM) 7 July 2026 When we look at the positions of the millions of galaxies DESI has measured, one thing jumps out immediately: galaxies are not spread out evenly. Instead, they clump and string together into a cosmic web: bright filaments of galaxies threaded around huge, almost empty voids, which are some […]

Follow up of Rubin Alerts Characterizes the Transient Sky 4 May 2026 Joan Najita (NOIRLab) With its large field of view and ability to acquire a lot of spectra simultaneously, DESI is well suited to many investigations beyond its primary mission of charting out the role of dark energy in the expansion history of the […]