Aeronautics and Space Report of the President FY 1995 Activities



BIA Bureau of Indian Affairs (DoI)

bioreactor An advanced tissue culturing apparatus

black hole A completely collapsed, massive dead star whose gravitational field is so powerful that no radiation can escape from it; because of this property, its existence must be inferred rather than recorded from radiation emissions

BMDO Ballistic Missile Defense Organization (formerly SDIO)

boreal Northern

boundary layer A layer of fluid, close to the surface of a body placed in a moving stream, that is distinguishable from the main airflow by distinctive flow characteristics of its own caused by friction

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Curator: Lillian Gipson
Last Updated: September 5, 1996
For more information contact Steve Garber, NASA History Office,