Word: dusts
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Dates: during 1960-1969
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...line of UH-1B "Huey" choppers, cigar-chomping U.S. Army pilots at the controls, shatters the morning calm with a roar of cranked-up motors and the whip-whip-whip of whirling rotors. In Quang Due province, the local American adviser, a Negro captain, jounces along a red-dust path in his familiar Jeep, packing a .45 on his hip and speaking Vietnamese with a Basin Street beat. In a sandbagged patrol base in Binh Duong province, a U.S. captain sprawls in a hammock, exhausted after a night's march, a carbine across his belly...
...gave a tremendous boost to the entire U.S. space program. Gigantic rockets are already being built for manned exploration of the moon, but before a man dares to blast off, astronomers must learn the nature of the l And their biggest telescopes cannot tell them whether to expect fluffy dust or jagged rocks, smooth plains or pockmarked lava. Hampered by the turbulence of the earth's atmosphere, they can see nothing that is smaller than one mile across. Ranger VII's cameras, during their last few moments before impact on the moon, did at least 1,000 times...
...triumph enough, but the quavering sound continued. So did the voice on the loudspeaker. "All cameras are functioning. Twenty seconds to impact. We are receiving pictures. Ten seconds to impact." At 6:25:49, the quavering signal abruptly stopped. Ranger had vanished in a puff of moon dust, sending pictures faithfully to the very end. With careful understatement, Dr. William H. Pickering, director of J.P.L., told newsmen: "We had our troubles, but it looks now as if this were a textbook operation...
...seen on the moon. His guess was that the pits were made when a giant meteorite hit the moon and dug the conspicuous crater Copernicus, which is surrounded by "rays" that are believed to be splashed-out material. Astronomers used to think that this material was some sort of dust, but Kuiper now believes it contained a large number of enormous rocks. When they fell back to the moon, the rocks dug craters of their own. The black dots in one of the craters seen by Ranger are probably shadows cast by the jagged 300-ft. rock that made...
...that they had not yet seen the first-grade pictures and had taken time for only casual study of the second-grade prints. Only a few things are obvious to the expert but hasty eye. The moon's "seas" do not seem to be covered with deep, fluffy dust, as many lunar experts have argued. If they were, the little 3-ft. craters would not have steep edges. There may be a layer of soft material an inch or so thick, but Dr. Eugene Shoemaker of the U.S. Geological Survey, a former believer in deep moon dust, said that...