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Credit & Copyright: J. P. Dwyer
Explanation:
Sometimes, near midnight,
auroras suddenly stop. Nobody knows why.
This
nightside gap in
aurora was
confirmed recently by D. Chua
(U. Washington) and colleagues in data from the
Ultraviolet Imager onboard the
Polar spacecraft.
The gap appears from space as a
slight break in a more
full auroral arc
surrounding a magnetic pole of the Earth.
Pictured above are clouds and
auroras occurring last August near
Wildcat Mountain in
Wisconsin.
Tomorrow's picture: A New Storm In The Solar System
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NASA Web Site Statements, Warnings, and Disclaimers
NASA Official: Jay Norris. Specific rights apply.
A service of: LHEA at NASA / GSFC
& Michigan Tech. U.
Based on Astronomy Picture
Of the Day
Publications with keywords: aurora
Publications with words: aurora
See also:
- APOD: 2025 January 7 Á A New Years Aurora and SAR Arc
- APOD: 2024 December 8 Á Aurora around Saturns North Pole
- APOD: 2024 October 16 Á Colorful Aurora over New Zealand
- APOD: 2024 October 13 Á Aurora Timelapse Over Italian Alps
- Northern Lights, West Virginia
- Aurora Australis and the International Space Station
- APOD: 2024 June 26 Á Timelapse: Aurora, SAR, and the Milky Way