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space travel
space travel see space exploration ; space science .
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Sally K. Ride
Sally K. Ride 1951-, American astrophysicist and astronaut, b. Encino, Calif. With a Ph.D. in physics from Stanford Univ., she joined NASA in 1978, where she was an astronaut (1979-87) and helped design the robot arm for the space shuttle. In 1983 she became the first American woman in space. She a...
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Konstantin Eduardovich Tsiolkovsky
Konstantin Eduardovich Tsiolkovsky , 1857-1935, Russian inventor and rocket expert. He lost his hearing in childhood, and, as he could not attend the usual schools, he educated himself. His most important work was concerned with the possibility of rocket flight into outer space. Tsiolkovsky's The I...
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Buzz Aldrin
Buzz Aldrin (Edwin Eugene Aldrin, Jr.), 1930-, American astronaut, b. Montclair, N.J. After graduating from West Point (1951), Aldrin joined the U.S. air force and flew 66 combat missions during the Korean War. His doctoral thesis at the Massachusetts Inst. of Technology (1963) on orbital mechanics...
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Wernher von Braun
Wernher von Braun , 1912-77, German-American rocket expert, b. Germany, grad. Berlin Technological Institute (B.S., 1932), Univ. of Berlin (Ph.D., 1934). Devoted to the pursuit of rocketry and spaceflight since his teenage years, von Braun assisted Hermann Oberth after 1930 in early experiments in...
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space-time
space-time In relativity theory, a central concept that unifies the three space dimensions (length, breadth, and height) with time to form a four-dimensional frame of reference. Durations and rates of processes depend on the relative state of motion of the observer and the system observed. In 1907,...
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Mir
Mir a Soviet space station, launched in 1986 and designed to be permanently manned. The name is Russian, literally ‘peace’....
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Challenger
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. The disaster was caused by the faulty design of a gasket (the O-ring seal). As dramatically demonstrat...
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National Aeronautics and Space Administration
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 exploration , artificial satellites (see satellite, artificial ), rocketry, and space telescopes (...
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National Aeronautics and Space Administration
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 exploration , artificial satellites (see satellite, artificial ), rocketry, and space telescopes (...
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