Explanation: Astronomers recently witnessed an astounding, large scale solar event as the Sun's north and south magnetic poles changed places! But, this complete solar magnetic field flip was actually anticipated. It occurs every 11 years during the maximum of the solar activity cycle. Plagues of sun spots, flaring active regions, and huge prominences are also hard-to-miss signs that the solar maximum is here. On February 12, the sungazing SOHO spacecraft captured this dramatic image of a magnificent prominence above the Sun's limb. Seen at the lower right, streams of relatively cool dense plasma were lofted along looping magnetic field lines extending outward about 30 times the diameter of planet Earth. Far above the limb at the upper right, a disconnected ghostly arc surrounds a dark cavity with bright central emission. These features are telltale signs of a coronal mass ejection -- yet another violent expulsion of material from the active Sun. Enormous, intensely bright active regions also mottle the solar surface in this image, recorded in the light of energetic Helium atoms by SOHO's Extreme ultraviolet Imaging Telescope.
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 - coronal mass ejection - solar cycle - magnetic cycle - Solnce - solnechnyi cikl - magnitnyi cikl - koronal'nyi vybros - Protuberanec
Publikacii so slovami: Sun - prominence - coronal mass ejection - solar cycle - magnetic cycle - Solnce - solnechnyi cikl - magnitnyi cikl - koronal'nyi vybros - Protuberanec | |
Sm. takzhe:
Vse publikacii na tu zhe temu >> | |
