... The Russian TESIS/ CORONAS-PHOTON Solar Observatory, which has been working in orbit since January 30th, 2009, has photographed one of the most important events in the build up to the upcoming solar cycle - the formation of our star's new southern belt of activity. The first magnetic fields of the new cycle in the southern hemisphere appeared on the Sun's surface on May 23-24th. ... The belt of activity is one of the primary concepts, characterizing the solar cycle. ...

Statistics of sunspot activity . The sunspot indices . ... Visual indices of solar activity . ... n - number of spot groups . A - Waldmeier class of unipolar spot groups without penumbra . B - class of bipolar spot groups without penumbra . C - class of bipolar spot groups with one penumbra pole . D - class of small bipolar spot groups with two penumbra poles . E - class of middle bipolar spot groups with two penumbra poles . ... H - class of unipolar penumbrated spot groups . ...

... Tonight's Sky . ... SUN MOON MERCURY VENUS MARS, JUPITER SATURN . ... Observing . ... Why do the constellations and the Moon appear upside down from the Southern Hemisphere? ... From the Southern Hemisphere, any object or constellation that lies near the celestial equator (the imaginary line that divides the northern and southern halves of the sky) would appear both upside down and reversed left to right compared to a northern perspective. ... Get instant access to subscriber content on Astronomy...

... Science . ... Science Users Information > Science Activities > VLT/VLTI Science Verification > MIDI . ... Observing Facilities . ... Science Archive Facility . ... Science in Garching . ... MIDI Science Demonstration activities of the VLTI with the Unit Telescopes have been ongoing since June 2003 . ... Access to these data is restricted to astronomers in the ESO member countries that are registered users of the ESO Science Archive Facility (register here: http://archive.eso.org/register/new ). ...

Weekly Bulletin on Solar and Geomagnetic Activity Highlights on 04 - 10.05.2015, Forecast on 11 - 18.05.2015, Carrington Rotation 2163 (24,21.04.2015) SUNSPOT-FORMING ACTIVITY OF THE SUN WAS AT THE AVERAGE LEVEL, GRADU- ALLY INCREASING BY THE END OF THE PERIOD. ... FLARE ACTIVITY WAS AT THE HIGH LEVEL ON MAY 05, AT THE MIDDLE LEVEL - 6.05 AND AT THE LOW -IN OTHER DAYS. ... FROM 07.05/2130 UT ON 09.05/14 UT THE EARTH WAS IN "-" SECTOR OF THE INTERPLANETARY MAGNETIC FIELD, THEN AGAIN IN "+". ...

... The Southern Sky in Warm Hydrogen . ... Although spectacular emission nebula s glow brightly in this type of red light ( H-alpha ), a diffuse amount of warm hydrogen is spread throughout our Galaxy and its glow nicely indicates not only where darker hydrogen and other gasses may be located, but also the sometimes- complex history of interstellar gas . ... Publications with keywords: SHASSA - Milky Way - H-alpha . Publications with words: SHASSA - Milky Way - H-alpha . ...

Armenia (ANRAO registered) . Brazil (ANRAO registered) . Bulgaria (ANRAO registered) . China (ANRAO registered 30.07.2003.) ... Note: participating states - states which have sent teams with contestants to at least one IAO; individual participation - individual participating of the contestants from the state; observing states - states, which have sent observers to at least one IAO but haven't sent contestants yet. National Astronomy Olympiads of participating states . ...

... Strategy is essenDal to any observing program. ... Observe 20 pulsars every ~two weeks in three bands to achieve 100 ns Dming precision. ... Parkes basics #1 · Sources locaDon: Right Ascension (RA) and declinaDon (DEC) · Local Sidereal Time (LST): Tells you what is visible when RA=LST sources are highest on sky ­ Sources with RA LST are in the west (se]ng) ­ Sources with RA LST are in the east (rising) · Generally we observe GalacDc plane from rise to set · ...

Next: C.S. Jeffery Up: J.G. Doyle Previous: Magnetic Reconnection Contents . We present, for the first time, blinker phenomena associated with brightenings in pre-existing coronal loops registered by the EIT in Fe XII 195?. ... We suggest that the blinker activity we observe is triggered by interchange reconnection, serving to provide topological connectivity between newly emerging flux and pre-existing flux. ...

STScI . ... What is STScI . ... Science Blog . ... The Institute . ... Science Projects . ... Hard Science/Soft Skills . ... STScI Webcasts . ... Participant . ... STScI/ESA . ... Rice University . ... Space Telescope Science Institute . ... European Space Agency . ... Steward Observatory . ... European Southern Observatory . ... Space Science Institute . ... Space Telescope - European Coordinating Facility . ... Steward Observatory, University of Arizona . ... ST-ECF, European Southern Observatory . ...

... The Sun of our solar system is a typical star of intermediate size and luminosity. ... The Sun has a very complex surface magnetic field created by convective flow of the electrically conducting solar material. ... The escaping hot coronal plasma is called the solar wind . ... See the table below for the observed features above the Sun's surface. ... Chromospheric features . Coronal features . ... dense clouds of material suspended above the surface of the Sun by magnetic field line loops . ...

... 1997: . As a result of