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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.
A Yukon Aurora
Explanation: Last week was another good week for auroras . The story began about two weeks ago when two large Coronal Mass Ejections exploded off the Sun . Waves of elementary particles and ions swept out past the Earth on September 28 and 29, causing many auroras . A week ago, a flapping sheet that divides north and south regions of the Sun's magnetic field passed the Earth, again causing auroras. Pictured above is a particularly good image of one of the October 1 northern lights . Taken in Canada 's Yukon , the city lights of Whitehorse are seen below dark cloud s and a twisting green aurora .
| Date | October 8, 2001 |
|---|---|
| Credit | Credit & Copyright: Yuichi Takasaka |
| Authors & editors: | Robert Nemiroff (MTU) & Jerry Bonnell (UMCP) |
| A service of: |
ASD at NASA / GSFC, NASA Science Activation & Michigan Tech. U. |