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Астронет: Астрономическая картинка дня Полярное сияние над Норвегией в виде сказочного существа http://variable-stars.ru/db/msg/1295469/eng |
Credit & Copyright: Ole C. Salomonsen
(Arctic Light Photo)
Explanation:
It was Halloween and the sky looked like a creature.
Exactly which creature, the
astrophotographer was unsure
(but possibly you can suggest one).
Exactly what caused the
eerie apparition was sure:
one of the best
auroral displays in recent memory.
This
spectacular aurora had an unusually high degree of
detail.
Pictured
above, the vivid green and purple
auroral colors are caused by high atmospheric
oxygen and
hydrogen
reacting to a burst of incoming
electrons.
Birch trees in TromsЬ,
Norway
formed an also
eerie foreground.
Many other photogenic auroras have been triggered by
recent energetic flares on the Sun.
Astrophysicists:
Browse 600+ codes in the Astrophysics Source Code Library
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.