In this blogpost we introduce another batch of supporting papers released yesterday on April 11, just one week after releasing our cosmological results using BAO from galaxies and quasars and the Lyman-alpha forest. Yesterday’s papers do not exhibit new results, but represent major stepping stones towards the cosmology results from the RSD (aka Full Shape) […]
Main Content
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.
First Cosmology Results from DESI
DESI has created the largest 3D map of our universe. The Universe’s expansion history is now known to better than 1% precision, yielding the best picture yet of how the universe has evolved over the past 11 billion years. Read more in our announcement and the BerkeleyLab Press Release. Our results were presented at the APS and Moriond meetings as well as on Youtube.
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 2024 Results: April 4 Guide
On April 4, DESI released a set of papers marking our first release of year one (Y1) results. This page contains summaries of our main results and a guide to the publications. The papers will be available on arXiv at 5pm PST on April 4, and until then are available here. Helpful links A press […]
A Record-Breaking Night
12 February 2024 was a spectacular night for DESI: it broke its own record and acquired nearly 200,000 redshifts in a single night. The figure is remarkable, especially in the context of history. Forty years ago, the first and second CfA redshift surveys acquired spectra of 2200 and 15,000 galaxies respectively, giving us the first […]
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