Word: impacted
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Dates: during 1960-1969
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These clues strengthen Kuiper's belief that Copernicus was formed by the impact of a comet, one of three or four that have hit the visible side of the moon during its 4½-billion-year lifetime. He estimates that the comet weighed a million million tons, had a nucleus ten miles in diameter, and crashed into the moon at a speed of 35 miles per second. The explosion produced by the stupendous collision was intensified by the comet's high content of ice expanding into steam on impact. The resulting blast produced a crater 60 miles across...
...heat of impact and the resulting steam penetrated deep into the moon and formed a pool of molten material that later solidified as the crater floor. The hot lunar material and huge chunks of rubble floating in it, says Kuiper, created the volcanic structures that can be seen in Orbiter's picture...
Housekeeping Pictures. Other scientists had other interpretations. Cornell University Astronomer Thomas Gold, who believes that Copernicus was formed, like most other lunar craters, by the impact of a meteorite, theorizes that its smooth floor consists of compacted dustlike material that is continually being knocked off crater walls by micrometeorites. U.S. Geological Survey Geologists John McCaulay and Richard Eggleton were fascinated by the apparent presence of erosion channels on the far wall of the crater. They suggest that the channels may have been formed by solid particles flowing down the crater wall...
...Dash panel knobs must be so situated that a safety-belted driver can reach them; at the same time they must be out of impact range. Ignition keys, for instance, are to be moved out of possible contact with a driver's knee. Cigarette lighters and windshield-washer buttons are to be spaced away from headlight switches to prevent an accidental turn-off of headlights. All of this has already been done on '67 cars...
...pleased, but almost everyone was appeased. The idealists -- who argued that to talk of reforms after discrediting the premises of the draft system diluted the impact of the denunciation -- were thrown a sop. The final resolution declared that the conference was primarily against an involuntary system...