Northern lights occur when a solar flare interacts with Earth's atmosphere.
Martha Stewart on MSN
Intense solar flares could spark northern lights this week—see the best viewing spots
A surge of solar activity could trigger auroras.
The Daily Galaxy on MSN
Catch stunning northern lights this week as solar activity surges
Solar conditions are shifting as fresh solar eruptions ripple through the space environment, prompting forecasters at NOAA to ...
Some results have been hidden because they may be inaccessible to you
Show inaccessible results