New DESI DR2 Lyman-alpha Results Shed Light on Dark Energy

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. […]