Credit & Copyright: Alan Friedman
(Averted Imagination)
Explanation:
Why is the Sun so quiet?
As the Sun enters into a period of time known as a
Solar Minimum, it is, as expected, showing fewer
sunspots and
active regions than usual.
The quietness is somewhat unsettling, though, as so far this year, most days show no sunspots
at all.
In contrast, from 2011 - 2015, during
Solar Maximum,
the Sun displayed spots just about every day.
Maxima and minima occur on an
11-year cycle, with the
last
Solar Minimum
being the most quiet in a century.
Will this current Solar Minimum
go
even deeper?
Even though the
Sun's activity affects the Earth and its surroundings,
no one knows for sure
what
the Sun will do next,
and the physics behind the processes remain an
active topic of research.
The
featured image was taken
three weeks ago and shows that our Sun is busy even on a quiet day.
Prominences of hot
plasma,
some larger than the Earth,
dance continually and are most easily visible over the edge.
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 |
Yanvar' Fevral' Mart Aprel' Mai Iyun' Iyul' Avgust Sentyabr' Oktyabr' Noyabr' Dekabr' |
NASA Web Site Statements, Warnings, and Disclaimers
NASA Official: Jay Norris. Specific rights apply.
A service of: LHEA at NASA / GSFC
& Michigan Tech. U.
|
Publikacii s klyuchevymi slovami:
Sun - prominence - Solnce - solnechnyi cikl - Protuberanec
Publikacii so slovami: Sun - prominence - Solnce - solnechnyi cikl - Protuberanec | |
Sm. takzhe:
Vse publikacii na tu zhe temu >> | |
