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APOD
Astronomy Picture of the Day
Discover the cosmos! Each day a different image or photograph of our fascinating universe is featured, along with a brief explanation written by a professional astronomer.
Dueling Auroras
Explanation: Will it be curtains for one of these auroras? A quick inspection indicates that it is curtains for both, as the designation “ curtains ” well categorizes the type of aurora pattern pictured. Another (informal) type is the corona . The above auroras resulted from outbursts of ionic particles from the Sun during the last week of September. A polarity change in the solar magnetic field at the Earth then triggered auroras over the next few days. The above picture was taken on October 3 as fleeting space radiation pelted the Earth's atmosphere high above the Yukon in Canada .
| Date | December 3, 2001 |
|---|---|
| Credit | Credit & Copyright: Phil Hoffman |
| Authors & editors: | Robert Nemiroff (MTU) & Jerry Bonnell (UMCP) |
| A service of: |
ASD at NASA / GSFC, NASA Science Activation & Michigan Tech. U. |