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Астронет: Астрономическая картинка дня Дракон северного сияния над Норвегией http://variable-stars.ru/db/msg/1406278/eng |
Credit & Copyright: Marco Bastoni
Explanation:
What's that in the sky?
An aurora.
A large coronal hole opened last month, a few days before
this image was taken,
throwing a cloud of fast moving
electrons,
protons, and
ions toward the
Earth.
Some of this cloud impacted our
Earth's magnetosphere
and resulted in spectacular auroras being seen at high
northern latitudes.
Featured here is a particularly photogenic
auroral curtain captured above
TromsЬ
Norway.
To the astrophotographer, this
shimmering green glow of
recombining atmospheric
oxygen
appeared as a large
dragon, but feel free to
share what it
looks
like to you.
Although now past
Solar
Maximum,
our
Sun continues to
show occasional activity creating
impressive auroras on Earth
visible even last week.
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.