Word: altrock
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Dates: during 1980-1989
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...stretching of magnetic-field lines is also believed to be responsible for the spots' appearing progressively closer to the solar equator and the switch of magnetic polarities after each cycle. But ingenious as it seems, the dynamo model of the sun may need some serious revision. Astronomer Richard Altrock, at Sacramento Peak, has observed a brightening of the sun's corona that begins near the poles -- just when the first sunspots of a cycle break out around 35 degrees latitude -- then slowly progresses toward the equator. The brightening, he suspects, marks the beginning of still another cycle, long before...
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