Credit & Copyright: Bret Dahl
Explanation:
Is that a cloud hovering over the Sun?
Yes, but it is quite different than a cloud hovering over the Earth.
The long light feature on the left of the
above color-inverted
image
is actually a solar filament and is composed of mostly charged
hydrogen gas held aloft by the Sun's
looping
magnetic field.
By contrast, clouds over the Earth are usually much
cooler,
composed mostly of tiny water droplets, and are
held
aloft
by upward air motions because they are weigh so little.
The above filament was captured on the Sun about two weeks ago near the
active solar region
AR 1535 visible on the
right with
dark sunspots.
Filaments typically last for a few days to a week, but
a long
filament
like this might hover over the Sun's surface for a month or more.
Some filaments trigger large
Hyder flares
if they suddenly collapse back
onto the Sun.
1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 |
Январь Февраль Март Апрель Май Июнь Июль Август Сентябрь Октябрь Ноябрь Декабрь |
NASA Web Site Statements, Warnings, and Disclaimers
NASA Official: Jay Norris. Specific rights apply.
A service of: LHEA at NASA / GSFC
& Michigan Tech. U.
Публикации с ключевыми словами:
Sun - filament - active region - Солнце - Солнечная активность
Публикации со словами: Sun - filament - active region - Солнце - Солнечная активность | |
См. также:
Все публикации на ту же тему >> |