Over the past several days, there has been a lot of activity on the surface of the sun. As a result of this, NOAA's Space Environment Center is predicting extensive auroral activity. overnight. So, if you are still up and about, keep a look outside towards the northern skies.
More information on auroras in general, see:
- Tips on Aurora Prediction and Viewing
- NOAA Aurora Information Paper (PDF) - excellent scientific, but understandable explanation
