I Wonder Why This Number Is Rising So...
Politics0 min ago
No best answer has yet been selected by aka estie. Once a best answer has been selected, it will be shown here.
For more on marking an answer as the "Best Answer", please visit our FAQ.The Northern and Southern lights are caused as I'm sure you know by solar activity.
You may not know that this activity is cyclical with a period of 11 years, it reached a maximum in 1990-91 in 2001-2002 and will again in 2012-2013
Consequently we're getting close to a minimum right now and you might be well advised to put it in your calendar for a few years time if you want the best chance of seeing a really good show.