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Sunspot Loops in Ultraviolet
<< Yesterday 10.10.2004 Tomorrow >>
Sunspot Loops in Ultraviolet
Credit & Copyright: TRACE Project, NASA
Explanation: It was a quiet day on the Sun. The above image shows, however, that even during off days the Sun's surface is a busy place. Shown in ultraviolet light, the relatively cool dark regions have temperatures of thousands of degrees Celsius. Large sunspot group AR 9169 is visible as the bright area near the horizon. The bright glowing gas flowing around the sunspots has a temperature of over one million degrees Celsius. The reason for the high temperatures is unknown but thought to be related to the rapidly changing magnetic field loops that channel solar plasma. Sunspot group AR 9169 moved across the Sun during 2000 September and decayed in a few weeks.

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Authors & editors: Robert Nemiroff (MTU) & Jerry Bonnell (USRA)
NASA Web Site Statements, Warnings, and Disclaimers
NASA Official: Jay Norris. Specific rights apply.
A service of: LHEA at NASA / GSFC
& Michigan Tech. U.

Russkii tekst
Based on Astronomy Picture Of the Day
Publikacii s klyuchevymi slovami: TRACE - sunspot - ultraviolet - Solnechnye pyatna - Ul'trafioletovoe izluchenie
Publikacii so slovami: TRACE - sunspot - ultraviolet - Solnechnye pyatna - Ul'trafioletovoe izluchenie
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