God Bless America

June 8 2000

A vigorous shock wave passed NASA's ACE solar wind monitoring spacecraft this morning at 0842 UT. Disturbances detected by ACE usually reach Earth about an hour later. This disturbance was the leading edge of a gigantic bubble of gas ejected from the Sun on June 6. It's been expanding toward our planet for the past day and a half.

For more information and updates please visit http://www.spaceweather.com 

-->Note from the SAC Chief: For more information and a photo recorded by IMAGE spacecraft's Extreme Ultraviolet Imager, showing solar ultraviolet radiation scattered from ionized helium in the Earth's extended atmosphere, go directly to:

http://www.spacescience.com/headlines/y2000/ast05jun_1m.htm 

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Submitted by
CMDR Constance Sanders
USS Yorktown
Chief, Space Activities Committee, SFC
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