The Day the Solar Wind (Almost) Disappeared

Monday, December 13, 11:00 AM.

The day was May 11 this year, and data suggest that the solar wind dropped to almost zero. This was accompanied by a rare auroral phenomenon, in which Earth’s entire polar cap, not just a ring, glowed. The event has been described as a window to the corona’s electrons.


Keith W. Ogilvie, Project Scientist for WIND spacecraft, NASA Goddard Space Flight Center, Greenbelt, Maryland

Jack D. Scudder, Principal Investigator for Hot Plasma Analyzer, Polar Spacecraft, University of Iowa, Iowa City, Iowa

David L. Chenette, Principal Investigator for Polar Ionospheric X-Ray Imaging Experiment, Polar Spacecraft, Lockheed Martin Advanced Technology Center, Palo Alto, California