 |
Астронет: Астрономическая картинка дня Солнечный мох http://variable-stars.ru/db/msg/1162788/eng |
Credit & Copyright: TRACE Project,
NASA
Explanation:
Discovered in recent close-up pictures of the Sun from NASA's
Transition Region
And Coronal Explorer (TRACE) spacecraft,
this spongy-looking stuff has a temperature of 2 million
degrees Fahrenheit ... and has been dubbed "Solar Moss".
The false-color TRACE image above was recorded in extreme ultraviolet light
on October 18.
It shows the solar moss associated with
hot magnetic plasma
loops arching above one of
the Sun's active regions.
The moss is the dark blue and white fluff that seems to cover
areas between the bright white bases of the loops.
Solar moss has been seen to spread, typically persisting for
tens of hours, and may form rapidly following a solar flare.
Solar moss isn't found growing only on the Sun's north side,
but as a rule seems to lie above
the photosphere or visible surface,
in the
transition region of
the solar atmosphere.
Complex and previously unknown, this feature may provide a clue
to the
long sought mystery mechanism responsible for
heating the Sun's outer atmosphere.
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.