Word: lightly
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Dates: during 1950-1959
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...Atlanta, U.S. Judge Frank A. Hooper heard the complaint of two Negro ministers, decided that segregated seating on city buses was unconstitutional in light of the Supreme Court's Montgomery bus decision. Atlanta becomes the third Southern city (with Montgomery and New Orleans) ordered to integrate buses; 26 other cities have desegregated voluntarily...
...space expert, "is their early start." The U.S.S.R. began working on long-range ballistic missiles soon after World War II. The U.S. did not push ballistic-missile development until 1954, after U.S. physicists decided that they could do what they had said was impossible: make a nuclear warhead light enough to be carried in the nose of a missile...
...Mary's Hospital for a few days and four pints of blood. But by various devices, such as always doing her homework in bed, Marclan saves enough energy to play the piano, teach in her father's Baptist Sunday school, and carry on light campus activities. It has already taken more than 250 pints of blood to keep Marclan Walker up to this pitch of near-normal activity...
Astronomers can hardly wait for the day when these first space scouts are launched. For oddly enough, they know less in many ways about the planets, the earth's neighbors, than they do about far-distant stars. The reason is that stars shine in their own light, revealing much about themselves to astronomers' spectroscopes. The solar system's planets are visible only in the reflected light of the sun. Their spectra carry little firm information, and the details that can be seen on their surfaces are clear enough to excite but too vague to satisfy human curiosity...
...tell its story properly from the distance of Mars, a probe needs as much power as an earth-side radio station. One possibility is a nuclear battery getting its energy from radioactive materials. Another (one form of which was invented by Professor Gold) is a solar battery of gossamer-light plastic film whose large area will catch several kilowatts of solar power...