Explanation: The Sun rotates on its axis about once every 27 days. How can you tell? Just follow the sunspots. This composite picture was constructed from solar images recorded daily by the MDI instrument on board the space-based SOlar and Heliospheric Observatory (SOHO). It shows the Sun's visible surface for most days of August 1999 so that the same sunspots appear many times as the solar rotation carries them across the face of the Sun. Sunspot temperatures are around 5,000 degrees C. but the spots appear dark as they are actually cooler than the surrounding regions of the solar surface. The sequential images of the sunspot groups show how these regions with high magnetic fields change from day to day.

<<  Oktyabr'  >> Pn Vt Sr Cht Pt Sb Vs         1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 1995   1996   1997 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'

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.

Publikacii s klyuchevymi slovami: Sun - solar rotation - sunspot - Solnechnye pyatna - Solnechnaya aktivnost' - magnitnoe pole Solnca Publikacii so slovami: Sun - solar rotation - sunspot - Solnechnye pyatna - Solnechnaya aktivnost' - magnitnoe pole Solnca
Sm. takzhe: Smotrya v storonu s solnechnogo zonda "Parker" Okruzhaya Solnce Solnechnyi minimum protiv solnechnogo maksimuma Kosmicheskaya stanciya, protuberancy i Solnce Ischezlo za 60 sekund: zakat i zelenyi luch Krugloe solnechnoe galo Chudovishnyi solnechnyi protuberanec Vse publikacii na tu zhe temu >>