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National Aeronautics and Space Administration

(Encyclopedia)National Aeronautics and Space Administration (NASA), civilian agency of the U.S. federal government with the mission of conducting research and developing operational programs in the areas of space e...

National Rifle Association of America

(Encyclopedia)National Rifle Association of America (NRA), group founded (1871) to promote shooting, hunting, firearm safety, and wildlife conservation. The NRA has more than 3 million members. The association spon...

Black Canyon of the Gunnison National Park

(Encyclopedia)Black Canyon of the Gunnison National Park, 30,300 acres (12,272 hectares), W central Colorado, in the Rocky Mts. The park embraces the most spectacular stretch of the 53-mi (85-km) long Black Canyon,...

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