Sun is more active

Sunspots detected on 03 June

NOAA forecasters estimate a 45% chance of geomagnetic activity on June 4th when an incoming solar wind stream and a CME might deliver a double blow to Earth's magnetic field.

Sunspots are cooler regions on the surface of the sun that appear visibly dark and are characterized by intense magnetic fields. Typically, the sun undergoes a cycle of activity that lasts approximately 11 years. Yet, until last December, astronomers were left to grapple with the sun's apparent inaction.