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The Day the Solar Wind Disappeared

Target Name:  Earth's Aurora
Spacecraft:  Polar
Produced by:  NASA
Copyright: Public Domain
Date Released: December 1999

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solarwnd.mpgMPEG320 x 2401M
solarwnd.movQuicktime320 x 2409M

As the solar wind dissipates on May 11, 1999, the magnetosphere and bow shock around Earth expand to five times their normal size. The aurora, which usually forms ovals around Earth's poles, fills in over the northern polar cap.

Copyright © 1995-2016 by Calvin J. Hamilton. All rights reserved.