Statistics of sunspot activity . The sunspot indices . ... NGDC's observations . The solar regions . ... Average annual indices . ... September . ... September, 1986 . Visual indices of solar activity by National Geophysical Data Center . ... Average . ...

... Magnetic storms online . ... Geomagnetic activity forecast . ... September : 2015 . ... No magnetic storm is expected . From 2 September 2015 to 28 September 2015 the following magnetic storms and disturbances are expected: . September 12, 2015 geomagnetic disturbances . September 02, 2015 geomagnetic storm of level G1 (minor) . ... September 20, 2015 geomagnetic disturbances 2 September 2015 - 28 September 2015 . 01.09.2015 . ... Probability of a magnetic storm . ...

... 2001 September 24 . A Solar Prominence Erupts . Credit: SOHO - EIT Consortium , ESA , NASA . Explanation: Our Sun is still very active. ... Sunspots , the Solar Cycle , and solar prominences are all caused by the Sun's changing magnetic field . Pictured above is a solar prominence that erupted on May 15, throwing electrons and ions out into the Solar System . ... Particularly hot areas appear in white, while relatively cool areas appear in red. ... About APOD | ... NASA Technical Rep.: ...

Weekly Bulletin on Solar and Geomagnetic Activity Highlights on 03 - 09.09.2012, Forecast on 10 - 17.09.2012, Carrington Rotations 2127, 2128 (15,04.08; 11,29.09.2012) SUNSPOT-FORMING ACTIVITY OF THE SUN ON SEPTEMBER 3 AND 4 WAS AT THE HIGH LEVEL ALSO DURING THE REMAINING DAYS ON THE AVERAGE LEVEL. ... NEXT WEEK THE LEVEL OF SUNSPOT ACTIVITY IS EXPECTED TO BE AVERAGE. ... BY DATA OF SOHO AND STEREO CORONOGRAPHS FOR THE PERIOD IT WAS OBSERVED 56 CME AMONG WHICH 3 WERE TYPE "PARTIAL HALO II". ...

... Credit Copyright: Philippe Moussette Explanation: So far, the Aurora Borealis or Northern Lights have made some remarkable visits to September's skies . ... This colorful example of spectacular curtains of aurora was captured with a fish-eye lens in skies over Quebec, Canada on September 11. ... Seen near Mars (just below and to the right) is the tightly knit Pleiades star cluster. ... Publications with keywords: aurora - Mars - pleiades . Publications with words: aurora - Mars - pleiades . ...

... Magnetic Fields in the Sun and stars: Measurements . Chair: Eric Priest . ... 10:00 The dynamic nature of the solar magnetic field . ... 10:40 Coffee break/Posters . ... 11:50 Magnetic Activity and Variability in Stellar Coronae (EUV) . ... 12:30 Magnetic Activity and Variability in Stellar Coronae (X-rays) . ... Magnetic Fields in the Sun and stars: Evolution . ... 14:30 Evolution of chromospheric activity in low mass stars, . ... 16:30 Activity in the Sun and late-type stars . ...

NEWS FEDERATION rus ENCYCLOPEDIA rus HISTORY rus MIR STATION RUSSIAN . ... Cosmonauts. ... Launches . ... Launch Vehicles. ... Space Science . ... Russian-Indian Activities On GSLV . While India successfully test fired its own Lox/LH2 engine Russian engineers continue to adapt 12CS (12KRB) stage for the Indian GSLV launch vehicle. Tsyklon-4, The Advanced Space Launch Vehicle . ...

SPACE TELESCOPE SCIENCE INSTITUTE TIPS Meeting 19 Sept 1996 A. Nota Summary of OSG Activities for the period 23 August ­ 16 September 1996 OSG + FOC = name here? SPACE TELESCOPE SCIENCE INSTITUTE TIPS Meeting 19 Sept 1996 A. Nota Summary of OSG Activities for the period 23 August ­ 16 September 1996 FOC Operations The F/96 relay has been operating nominally. ... That conclusion, however, was based on reconstructed FGS data since only one guide star was acquired when the images were taken. ...

... Maintenance and Work Completed on M1: September 10, 1999 . Whiffles Installed on M2: September 10, 1999 . M1 Support System Maintenance: September 10, 1999 . M1 Temperature Sensor Work and Repair: September 10, 1999 . M1 Hex-cell Deterioration: September 14, 1999 . ... M1 Whiffle Mount and M1 Back, September 21, 1999 . ... Views of Secondary Mirror (Back): April 13, 2000 . ... Front Portals: June 8, 2001 . ... M2 and M3 Baffle Work: June 8, 2005 . ... M3 Work: November 7, 2007 . ...

... Large . ... Normal . ... Thumbnails . ... Enter: Large | ... Contents with thumbnails: Large | ... Florence streets . ... Rome. ... Sunday, 12 September. ... Monday, 13 September. ... Tuesday, 14 September. ... Wednesday, 15 September. ... Thuesday, 16 September. ... Friday, 17 September. ... Saturday, 18 September. ... There's also index of the complete set of photos with thumbnails. ... return to photo album contents | ...

... 2000 September 25 . AR 9169: A Large Sunspot . ... Explanation: One of the largest sunspots in recent years is now crossing our Sun . Dominating active region AR 9169 , the sunspot is the large dark complex visible below (west) and right of center in the above photograph of our Sun taken last Thursday. ... AR 9169 holds the largest sunspot yet produced during this Solar Maximum , the time of greatest sunspot activity during the Sun's 11-year magnetic cycle . ... About APOD | ...