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NASA/U.S. Air Force KC-135 aircrew below the aircraft nose, 1995: "Weightless Wonder IV"

NASA/U.S. Air Force KC-135 aircrew below the aircraft nose, 1995: "Weightless Wonder IV," Johnson Space Center. Note the parabolic flight trajectory painted on the aircraft's nose. (Source: NASA/Glenn Research Center [C-1995-716]. Public domain.)

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