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Mike Witherell Scott Haselschwardt (LBNL) and Tim Daniels (UNC Wilmington) with the experimental setup – four high-purity germanium detectors surrounding the target chamber – at the end of the Triangle Universities Nuclear Laboratory beamline. Photo: Sean Finch. Career Journeys feature graphic - Peter Sorensen interview Berkeley Lab News Center featured image for 2023 Big Science Stories BLDS image - CMB-S4 homepage image Sept 2023 2023 P5 Report cover image - Olena Shmahalo for U.S. Particle Physics Stave after the full lamination process is completed – Photo credit: Jeffrey Ashenfelder, Yale University December 2023 - Physics Today cover image The Dark Energy Spectroscopic Instrument (DESI) will spend five years creating a 3-D map of the universe that will help reveal the nature of the dark energy driving cosmic expansion. The project's first six months of data show slivers of the universe that represent just 1 percent of the survey's ultimate volume of space. The colors represent different types of galaxies, including nearby bright galaxies in yellow, luminous red galaxies in magenta and galaxies with supermassive black holes in turquoise. Credit: Nadieh Bremer; Source: “The Early Data Release of the Dark Energy Spectroscopic Instrument,” by DESI Collaboration et al.; 2023 (data) Fermilab press release image: The crew moved the 2×2 prototype into place for insertion into the liquid argon cryostat, where it will collect data in the NuMI neutrino beam. Photo: Dan Svoboda, Fermilab CosmoPalooza 2023 - event logo banner For CMB-S4, a new set of telescopes will be built to map the light from the aftermath of the Big Bang in greater detail than ever before. The instruments will be installed at the South Pole (shown here) and in Chile. Geoff Chen