The aurora borealis will be more visible than usual Sunday night, the National Oceanic and Atmospheric Administration projects, potentially giving Americans in 10 states a view of the northern lights.

According to Dr. Schmoll, the Earth's magnetic field has a north and south pole, just like any magnet. The sun does as well. Dr. Schmoll says that science is still figuring out the specifics, but in short, the poles of the sun and Earth line up better during the equinox, which is conducive to more frequent auroras.