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Built in the 1890's the world's largest refracting telescope is maneuvered Wednesday, June 10, 2020, by hand by Ed Struble, who has served for 30 years as director of building and grounds at the Yerkes Observatory in Williams Bay, Wis. Recently, the University of Chicago transferred ownership of the 123-year-old facility to the Yerkes Future Foundation, a preservation group that plans to restore, refurbish and reopen the research center. (John Hart/Wisconsin State Journal via AP)

Built in the 1890's the world's largest refracting telescope is maneuvered Wednesday, June 10, 2020, by hand by Ed Struble, who has served for 30 years as director of building and grounds at the Yerkes Observatory in Williams Bay, Wis. Recently, the University of Chicago transferred ownership of the 123-year-old facility to the Yerkes Future Foundation, a preservation group that plans to restore, refurbish and reopen the research center. (John Hart/Wisconsin State Journal via AP)

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