* Astronomy

Dr. Guion Stewart "Guy" Bluford, Jr. (born November 22, 1942), is an engineer, NASA astronaut, and the first African American in space. Before becoming an astronaut, Bluford was a Colonel in the U.S. Air Force. 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 the mission STS-8, Bluford became the first African American in space as well as the second person of African ancestry in space, after Cuban cosmonaut Arnaldo Tamayo Méndez.
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