Spaceweather.com reports an ongoing mystery:
Source: EarthSky.org
AURORAS LIKELY THIS WEEK: For reasons researchers do not fully understand, the weeks around equinoxes have more geomagnetic disturbances than any other time of year. Data prove it: Auroras love equinoxes. We are now just weeks away from the northern autumnal equinox and, right on cue, the auroras have appeared:
And I’ll omit the pic (the one to the left is merely explanatory of equinoxes), as it may be proprietary to Spaceweather – you can follow the link if you wish to be smitten with solemn envy.
And if & when scientists figure out why there’s a statistically greater chance of auroras around the days of the equinox, I’ll look forward to understanding it.
