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2007-01-09 16:55:00

Earth's inhabitants are used to temperatures that vary, sometimes greatly, between day and night. New measurements for three planets outside our solar system indicate their temperatures remain fairly constant "“ and blazing hot "“ from day to night, even though it is likely one side of each planet always faces its sun and the other is in permanent darkness. The reason apparently is supersonic winds, perhaps as strong as 9,000 miles an hour, that constantly churn the planets'...