Credit & Copyright: J. Curtis
(U. Alaska Fairbanks)
Explanation:
What's happening behind those trees?
Aurora. This picture was taken at midnight near
Fairbanks,
Alaska,
and captures familiar trees,
common clouds, and a glowing sky markedly different than a
sunset. Particularly strange is the green
auroral ring caused by ionized
oxygen high in the
Earth's atmosphere.
The small water droplets composing clouds reflect and absorb
aurora light, giving clouds a reddish tinge.
The above picture was taken on September 20th of last year.
In the next few years the
Sun will reach the most active part of its 11 year cycle, meaning more
puffs of
high energy solar particles will be released,
and more
spectacular auroras
will occur when these
particles strike the Earth.
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Yanvar' Fevral' Mart Aprel' Mai Iyun' Iyul' Avgust Sentyabr' Oktyabr' Noyabr' Dekabr' |
NASA Web Site Statements, Warnings, and Disclaimers
NASA Official: Jay Norris. Specific rights apply.
A service of: LHEA at NASA / GSFC
& Michigan Tech. U.
|
Publikacii s klyuchevymi slovami:
aurora - polyarnoe siyanie - atmosfera Zemli - Solnechnyi veter - Solnechnaya aktivnost' - solnechnyi cikl
Publikacii so slovami: aurora - polyarnoe siyanie - atmosfera Zemli - Solnechnyi veter - Solnechnaya aktivnost' - solnechnyi cikl | |
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