Green Auroras
© Bjarki Mikkelsen

"Last night (Jan. 25th) was amazing. It was the first time in my life I have seen auroras so bright and clear," reports Bjarki Mikkelsen from a little Arctic village in northern Sweden. The display was so intense, even the snow turned green.

"I also thought I could hear a strange sound coming from the Northern Lights," he adds. "I've decided to stay here to get another chance to experience this again."

Another chance is in the offing. A coronal hole in the sun's eastern hemisphere is spewing a stream of solar wind, due to hit Earth about a week from now. High-latitude sky watchers should be alert for auroras on Feb 1st or 2nd.

More Images.