Delaying until August this year meant we got to appreciate pure darkness — and catch the northern lights, an unforgettable phenomenon that you can’t fully appreciate until you see it in person. We ...

Here's how to watch the northern lights predicted for Nov. 19-21, including where and when to watch them in the United States ...

A value called Bz indicates how far south the solar wind's magnetic field is pointing, which can predict how likely the northern lights are to occur.