A new sunspot is emerging over the sun’s southeastern limb. Provisionally numbered AR2765, it is inset in this magnetic map of the sun’s surface from NASA’s Solar Dynamics Observatory:
AR2765 is a member of new Solar Cycle 25. We know this because of its magnetic polarity. According to Hale’s Law, sunspots switch polarities from one solar cycle to the next. Southern sunspots from old Solar Cycle 24 have a -/+ polarity. This sunspot is the opposite: +/-, marking it as a member of Solar Cycle 25.
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No sunspots this week. The pattern persists, and this surprises me. But Spaceweather.com reported a couple of weak, barely emerging spots, never numbered, and by their magnetic polarity were from new Cycle 25. We rely on NOAA for official s... Read more
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