Coast Guardsmen walk with a member of NASA around the Aeroacoustic Propulsion Laboratory dome during a tour at NASA Glenn Research Center, Cleveland, Ohio, March 30, 2022. The AAPL dome is 65 feet high by 130 feet in diameter and is padded with thick fiberglass wedges to provide a reflection free acoustic environment.
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Photo credit: © Operation 2022 / Alamy / Afripics
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