Word: thermonuclear
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Dates: during 1940-1949
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Inside the stars, where the temperature may reach a "scorching" 20 million degrees centigrade, thermonuclear reactions are constantly at work changing hydrogen into helium. The University of Chicago's Dr. Otto Struve, head of the 42-man U.S. delegation, repeated a solemn prediction: in 3 billion years some stars will have burned up most of their hydrogen, leaving the helium "as 'ashes' of this stupendous nuclear transformation furnace...