whirling

Researchers at the U.S. Department of Energy’s (DOE) Princeton Plasma Physics Laboratory (<span class="glossaryLink" aria-describedby="tt" data-cmtooltip="PPPLThe U.S. Department of Energy’s Princeton Plasma…

The morning of August 20, 2014 was a quiet one in Earth’s ionosphere. The solar wind was calm and slack, and the orientation of the Sun’s magnetic field was stable, not conducive to producing much space weather. But then, hundreds of…