This photograph of John H, Glenn, Jr., 39, was taken during centrifuge testing at the U.S. Navy installation at Johnsville, Pennsylvania. Glenn is one of three National Aeronautics and Space Administration astronauts, one of whom will be selected for NASA's first manned suborbital flight as part of Project Mercury.
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This photograph of John H, Glenn, Jr., 39, was taken during centrifuge testing at the U.S. Navy installation at Johnsville, Pennsylvania. Glenn is one of three National Aeronautics and Space Administration astronauts, one of whom will be selected for NASA's first manned suborbital flight as part of Project Mercury.