Solar cycle space weather models may be miscalibrated: a new helioseismology study found the Sun’s magnetic activity has retreated toward its surface since 1987 in ways sunspot counts never detected.
Morning Overview on MSN
The sun’s acoustic heartbeat just revealed a hidden shift in the 11-year cycle — magnetic activity now squeezed into a thin skin just beneath the solar surface
Every 11 years, the Sun flips its magnetic poles, driving a cycle of sunspot eruptions, solar flares, and coronal mass ejections that can knock out power grids and fry satellites. For decades, ...
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