NASA caught the sun smiling down on us, but the grin could s

The dark patches, known as coronal holes, are regions where solar wind escapes more quickly and readily into space. Geomagnetic storms can disrupt GPS and hurt the power grid.

Related Keywords

Exploratorium , California , United States , San Francisco , Joseph Gurman , Goddard Space Flight Center , Solar Data Analysis Center , Atmospheric Administration Space Weather Prediction Center , National Oceanic , Dynamics Observatory , Atmospheric Administration , Space Weather Prediction Center , Stay Puft Marshmallow Man , Solar Dynamics Observatory , Space Flight Center ,