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Астронет: Астрономическая картинка дня Похожее на кита северное сияние над шведским лесом http://www.variable-stars.ru/db/msg/1821925/eng |
Credit & Copyright: Göran Strand
Explanation:
What's that in the sky?
An aurora.
A large
coronal mass ejection occurred on our Sun earlier this month,
throwing a cloud of fast-moving electrons, protons, and ions
toward the Earth.
Part of this cloud impacted our Earth's
magnetosphere
and, bolstered by a sudden gap, resulted in
spectacular auroras being seen at some high northern latitudes.
Featured here is a particularly photogenic
auroral corona captured above a forest in
Sweden
from a scenic perch overlooking the city of
цstersund.
To some,
this shimmering green
glow of
recombining atmospheric
oxygen
might appear like a large
whale, but feel free to
share what it looks like to you.
The unusually
quiet
Sun of the past few years has now passed.
As our Sun now approaches a
solar maximum in its
11-year solar magnetic
cycle,
dramatic auroras like
this are sure to continue.
Open Science:
Browse 2,700+ 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.