Aurora Over Winnipeg

Explanation: What's happening above that city? The city is Winnipeg , Canada , and the phenomenon is aurora . These past few months have been active ones for our Sun , producing several coronal mass ejections (CMEs) of particles that have swept past our Earth and caused many spectacular auroras . Specifically in this case, a CME that occurred on October 9 impacted the Earth on October 11 and 12, causing nearly 12 hours of auroras . The above-pictured aurora had to be very bright to be seen over the lights of Winnipeg, the city well below and in front of the cascading atmospheric airglow . Lights reflecting off of a slight haze cause an unrelated glow that emanates from some of the buildings.