Word: earthly
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Dates: during 1950-1959
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Congratulations. to Mr. Alec Gushing on his wit rather than his memory. It seems that he or someone forgot the prologue to the Squaw Valley drama. Might it not have been more accurate to mention the name of Marti Arrougé, the young Basque who trod the warm earth of Squaw Valley through many young summers following the bands of his father's sheep, who lost his only brother in one of its clear lakes and whose nimble skis have caressed its every slope? It was Arrougé who was the original partner of Wayne Poulsen; together they supplied...
...most important single discoveries in all of the IGY work was formulated chiefly by a man not directly associated with IGY, but working closely with IGY personnel in Cambridge, and a German working in the same field. The discovery--a startling correlation between the movements of five earth satellites and radio wave emission of the sun--is the most marked relation between solar and terrestrial phenomena ever found. The man behind this important find is a good-natured, gray-haired man named Luigi G. Jacchia. A meteor expert by trade, Jacchia may be found more often than not hunched over...
...inability of the computer programs to keep up with the satellite in calculating the orbit. Preliminary plans expected the satellite to be higher up than it was and so did not account for the rapid changes in the orbit's elements, caused by its encounter with the earth's atmosphere. These variations in velocity nearly drove the mathematicians crazy, for they showed no apparent regularity. Now it is know that if a satellite encounters atmosphere its angular momentum is decreased, and this produces a decrease altitude and a decrease in period. At first it was thought that the variations were...
...never suspected that the density varied with radiation. An IGY publication pointed out that these discoveries "will have a farreaching effect on interplanetary travel." They certainly will be important to the new X-15 rocket plane, projected to fly 400 miles above the Earth's surface...
...meteors and meteoric risk to satellites as well as optical tracking; Theodore E. Sterne, Associate5The basis of JACCHIA'S discovery of the direct relationship between solar radiation and the movement of the satellites is illustrated by these four lines. The top two plots show the acceleration of two earth satellites due to varying atmospheric density, over a period from April to December, 1958. The third graph is the intensity of solar radiation during the same period, and shows how peaks and troughs occur together on the three lines. The lower plot measures the angular position of the low point...