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2012, Thursday, 24. August 2006, 02:21
Solar Cycle Has Turned?
"A backward sunspot is a sign that the next solar cycle is beginning."
....It sounds exciting, but Hathaway is cautious on several fronts:
First, the sunspot lasted only three hours. Typically, sunspots last days, weeks or even months. Three hours is fleeting in the extreme. "It came and went so fast, it was not given an official sunspot number," says Hathaway. The astronomers who number sunspots didn't think it worthy!
Second, the latitude of the spot is suspicious. New-cycle sunspots almost always pop up at mid-latitudes, around 30o N or 30o S. The backward sunspot popped up at 13o S. "That's strange."
These odd-isms stop Hathaway short of declaring the onset of a new solar cycle. "But it looks promising," he says. |
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