An anonymous reader writes: NASA explained the mystery behind the decreased solar activity during the Sun's 11-year cycle, linking it to the changing speeds of plasma inside the Sun. The new computer model study suggests the Sun's plasma rivers speed up and slow down like a malfunctioning conveyor belt. The scientists identified that variations in a hot plasma flow in the sun's interior is the likely reason behind the lack of sunspots and a weak magnetic field at the sun's poles.
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