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Magnetic somersault

发布时间:2019-03-07 08:10:01来源:未知点击:

The solar cycle has passed its peak, according to data collected by astronomers at the US National Solar Observatory on Kitt Peak, Arizona, and analysed by David Hathaway at NASA’s Marshall Space Flight Center. Solar activity and the number of sunspots should now begin to decline. For the past 11 years, the Sun’s north magnetic pole has been in the northern hemisphere. But the poles reverse during each solar cycle,