by Skywatchers worldwide were treated to a magnificent aurora light show over the weekend as northern lights were reported as far south as Greece and Turkey.
The colorful aurora displays were triggered by a strong geomagnetic storm that peaked as a strong G3 on Nov. 5 at 12:40 p.m. EST (1740 GMT) on the 5-grade scale used by the U.S. National Oceanic and Atmospheric Administration (NOAA) to assess the severity of space weather events.
Geomagnetic storms are disturbances to Earth's magnetic field caused by solar material from coronal mass ejections (CME) — large expulsions of plasma and magnetic fields from the sun's atmosphere.
This particular geomagnetic storm was triggered by not one but two CMEs that slammed into Earth on Nov 4 and Nov. 5, according to spaceweather.com.
Source
The colorful aurora displays were triggered by a strong geomagnetic storm that peaked as a strong G3 on Nov. 5 at 12:40 p.m. EST (1740 GMT) on the 5-grade scale used by the U.S. National Oceanic and Atmospheric Administration (NOAA) to assess the severity of space weather events.
Geomagnetic storms are disturbances to Earth's magnetic field caused by solar material from coronal mass ejections (CME) — large expulsions of plasma and magnetic fields from the sun's atmosphere.
This particular geomagnetic storm was triggered by not one but two CMEs that slammed into Earth on Nov 4 and Nov. 5, according to spaceweather.com.
Source
