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<p>This three-minute video describes the focal plane, a key component for the Dark Energy Spectroscopic Instrument. The focal plane will be equipped with 5,000 swiveling robots that are designed to point at pre-selected galaxies and gather their light. The measurements will be used to build the largest 3D map of the universe. (Credit: Marilyn Chung/Berkeley Lab)</p>

VIDEO: 5,000 Robots Merge to Map the Universe in 3D

How do you create the largest 3D map of the universe? It’s as easy as teaching 5,000 robots how to “dance.” DESI, the Dark Energy Spectroscopic Instrument, is an experiment that will target millions of distant galaxies by automatically swiveling fiber-optic positioners (the robots) to point at them and gather their light. In creating this detailed map, scientists hope to learn more about dark energy, which is driving the accelerating expansion of the universe.

<p>From left to right: LZ Chief Engineer Jeff Cherwinka, UC Santa Barbara postdoctoral researcher Sally Shaw, and UC Santa Barbara engineer Suzanne Kyre in teh Sanford Underground Research Facility&#8217;s Davis Laboratory on Oct. 11. Behind them is a support frame, custom cart, and steel tank mockup that was tested for the delivery of acrylic tanks. (Credit: Constance Walter/Sanford Underground Research Facility)</p>

Acrylic Tanks Provide Clear Window Into Dark Matter Detection

Scientists have a new window into the search for dark matter – an acrylic vessel that features a grouping of 12-foot-tall transparent tanks with 1-inch-thick walls. The tanks, which will surround a central detector for a nearly mile-deep experiment under construction in South Dakota called LUX-ZEPLIN (LZ), will be filled with liquid that produces tiny flashes of light in some particle interactions.