Astronaut Guion S. Bluford Flies Into HistoryAstronaut Guion S. Bluford, STS-8 mission specialist, assists Dr. William E. Thornton (out of frame) with a medical test that requires use of the treadmill exercising device designed for spaceflight by the STS-8 medical doctor.Read More Facebook Pinterest X LinkedIn Email https://www.nasa.gov/image-detail/astronaut-guion-s-bluford-flies-into-history/Copy URL to clipboard> DownloadShareTagsBlack History MonthSize1041x681px