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<p>This image, from &#8220;Eternal Sky,&#8221; a short video production about the Simons Observatory, shows the Atacama Desert site where some of the telescopes for the CMB-S4 experiment will be built. (Credit: Copyright Debra Kellner/Simons Foundation)</p>

Lead Lab Selected for Next-Generation Cosmic Microwave Background Experiment

The largest collaborative undertaking yet to explore the relic light emitted by the infant universe has taken a step forward with the U.S. Department of Energy’s selection of Lawrence Berkeley National Laboratory (Berkeley Lab) to lead the partnership of national labs, universities, and other institutions that will carry out the DOE roles and responsibilities for the effort. This next-generation experiment, known as CMB-S4, or Cosmic Microwave Background Stage 4, is planned as a joint DOE and NSF project.