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(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...
(Encyclopedia) Challenger, U.S. space shuttle. It exploded (Jan. 28, 1986) 73 seconds into its tenth flight, killing all seven crew members, including the first civilian in space, schoolteacher Christa McAuliffe. Th...
(Encyclopedia) Glenn, John Herschel, Jr., 1921–2016, American astronaut and politician, b. Cambridge, Ohio. On Feb. 20, 1962, he became the first American and the third person to orbit the earth, circling the glob...
(Encyclopedia) space-time, central concept in the theory of relativity that replaces the earlier concepts of space and time as separate absolute entities. In relativity one cannot uniquely distinguish space and time...
(Encyclopedia) space law, agreements governing the exploration and use of outer space, developed since the first launching (1957) by humans of a satellite into space. Space law, an aspect of international law, has g...
(Encyclopedia) space travel: see space exploration; space science.
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(Encyclopedia) Young, John Watts, 1930–2018, American astronaut, b. San Francisco. A Navy test pilot, he joined the National Aeronautics and Space Administration's astronaut program in 1962. Young served as pilot ...
(Encyclopedia) space probe, space vehicle carrying sophisticated instrumentation but no crew, designed to explore various aspects of the solar system (see space exploration). Unlike an artificial satellite, which is...
(Encyclopedia) Edwards Air Force Base, U.S. military installation, 301,000 acres (121,805 hectares), S Calif., NE of Lancaster; est. 1933. It is one of the largest air force bases in the United States and has the wo...
(Encyclopedia) outer space: see space exploration.
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