9 March 2026 Joan Najita (NOIRLab) Two DESI scientists were recently awarded first place in the 2025 Annual Review of Nuclear and Particle Science Video Contest for their contribution, “Neutrino masses, from ghost particles to cosmological tensions,” which explains DESI’s results on the neutrino mass. We sat down with the winners, Hernán Noriega and Bernardita Ried Guachalla, […]
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The Dark Energy Spectroscopic Instrument (DESI)
The Dark Energy Spectroscopic Instrument (DESI) will measure the effect of dark energy on the expansion of the universe. It will obtain optical spectra for tens of millions of galaxies and quasars, constructing a 3D map spanning the nearby universe to 11 billion light years.The DESI Survey is being conducted on the Mayall 4-meter telescope at Kitt Peak National Observatory. DESI is supported by the Department of Energy Office of Science to perform this Stage IV dark energy measurement using baryon acoustic oscillations and other techniques that rely on spectroscopic measurements.
Latest News from DESI
New results from the first 3 years of DESI data strengthen hints that dark energy is evolving, with consequences for our understanding of nature and the fate of the Universe. Read more in the March 2025 BerkeleyLab Press Release. Videos discussing the results are available at the DESI YouTube channel. Further details are available in our guide to the publications reporting these results. The papers themselves are available here.
A new DESI data release is also now available for all to explore. The largest dataset of its kind ever shared, it contains information on 18.7 million galaxies, quasars, and stars. Read more in a companion BerkeleyLab Press Release.
DESI Science
en Español,
en Français,
한국어로,
简体中文,
ქართული,
em Português,
auf Deutsch,
en Català,
in Italiano.
5000 Eyes: Mapping the Universe with DESI is out now!
DESI's very own planetarium show is available for free to all planetariums. See the trailer and find more information here.
Translations in French, Spanish, Mandarin, and German are now available.
Highlights
DESI Begins
Latest Blog Posts

DESI DR2 cosmology chains and data products released
6 October 2025 Seshadri Nadathur (University of Portsmouth) To coincide with the official publication, today in Physical Review D, of the first DESI papers on cosmology results from baryon acoustic oscillations from Data Release 2 (DR2), the DESI collaboration has also released the full set of cosmology chains and other results supporting the papers. This […]

DESI Collaboration Wins 2026 Berkeley Prize
25 August 2025 The American Astronomical Society (AAS) has announced its selection of the DESI collaboration as the recipient of the 2026 Lancelot M. Berkeley–New York Community Trust Prize. Established in 2011, the prize is awarded annually for highly meritorious work advancing astronomy in the previous year. Previous recipients have included both individuals and teams […]
Latest Press Releases
DESI Early Data Release Holds Nearly Two Million Objects
Lawrence Berkeley National Laboratory, 13 June 2023
New DESI Planetarium Show to Premiere in 2023
Lawrence Berkeley National Laboratory, 27 February 2023
DESI Resumes Cataloguing the Cosmos
Lawrence Berkeley National Laboratory, 7 October 2022
Dark Energy Spectroscopic Instrument Creates Largest 3D Map of the Cosmos
Lawrence Berkeley National Laboratory, 13 January 2022
