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Photo - Researchers at Brown University assemble an array of photomultiplier tubes for the LUX-ZEPLIN dark matter search experiment. The first of two sets of the photomultiplier arrays arrived Friday at the Sanford Underground Research Facility in South Dakota. (Credit: Nick Dentamaro/Brown University) Photo - James Collins, a condensed matter researcher at Monash University in Australia, works on an experiment at Beamline 10.0.1, part of Berkeley Lab's Advanced Light Source. (Credit: Marilyn Chung) Photo - Crews at the Mayall Telescope near Tucson, Arizona, lift and install the top-end components for the Dark Energy Spectroscopic Instrument, or DESI. The components, which include a stack of six lenses and other structures or positioning and support, weigh about 12 tons. DESI, scheduled to begin its sky survey next year, is designed to produce the largest 3-D map of the universe and produce new clues about the nature of dark energy. (Credit: David Sprayberry, NOAO/AURA) Photo - FIONA is a new system at Berkeley Lab's 88-Inch-Cyclotron that enables direct mass number measurements of superheavy elements. (Credit: Marilyn Chung/Berkeley Lab)