Guion “Guy” Bluford, Jr. (born November 22, 1942), is an engineer, retired Colonel from the United States Air Force and a former NASA Astronaut. He participated in four Space Shuttle flights between 1983 and 1992. In 1983, as a member of the crew of the space shuttle Challenger on mission STS-8, Bluford became the first African American in space, and the second person of African ancestry, after the Cuban cosmonaut Arnaldo Tamayo Méndez.
http://en.wikipedia.org/wiki/Guion_Bluford
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