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Post by clone on Jul 14, 2012 22:08:49 GMT -8
The arrival of the CME shook Earth's magnetic field, which in turn induced electrical currents in the ground at Arctic latitudes. Rob Stammes measured the effect from his magnetic observatory in Lofoten, Norway: spaceweather.com/
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Post by clone on Aug 12, 2012 17:33:34 GMT -8
Plenty of dark matter near the Sun - Release Date: Aug 09, 2012 Astronomers at the University of Zürich, the ETH Zurich, the University of Leicester and NAOC Beijing have found large amounts of invisible “dark matter” near the Sun. Their results are consistent with the theory that the Milky Way Galaxy is surrounded by a massive “halo” of dark matter, but this is the first study of its kind to use a method rigorously tested against mock data from high quality simulations. The authors also find tantalising hints of a new dark matter component in our Galaxy. The team’s results will be published in the journal Monthly Notices of the Royal Astronomical Society. earthsky.org/science-wire/plenty-of-dark-matter-near-the-sunSunspot AR1540 erupted on August 11th, producing a long-duration M1-class solar flare that peaked around 1220 UT - the cloud is probably not heading for Earth. This conclusion is uncertain, however. www.spaceweather.com/
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Post by clone on Aug 17, 2012 9:13:33 GMT -8
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Post by clone on Sept 3, 2012 13:48:13 GMT -8
As expected, a coronal mass ejection hit Earth on Sept. 3rd at approximately 1200 UT (5 am PDT). The impact induced significant ground currents in the soil of northern Scandinavia and sparked bright auroras around the Arctic Circle. A moderate geomagnetic storm is underway. Whitehorse in the Yukon Territories during the early hours of Sept. 3rd www.spaceweather.com/
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Post by clone on Nov 25, 2012 18:06:21 GMT -8
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Post by Bastille Day Event on Nov 30, 2012 20:52:37 GMT -8
The Sun Does a Flip NASA scientists who monitor the Sun say that our star's awesome magnetic field is flipping -- a sure sign that solar maximum is here. February 15, 2001 -- You can't tell by looking, but scientists say the Sun has just undergone an important change. Our star's magnetic field has flipped. The Sun's magnetic north pole, which was in the northern hemisphere just a few months ago, now points south. It's a topsy-turvy situation, but not an unexpected one. The Sun's magnetic poles will remain as they are now, with the north magnetic pole pointing through the Sun's southern hemisphere, until the year 2012 when they will reverse again. This transition happens, as far as we know, at the peak of every 11-year sunspot cycle -- like clockwork. science.nasa.gov/science-news/science-at-nasa/2001/ast15feb_1/Bastille Day Event (X6) - July 14, 2000, occurring near the peak of the solar maximum in solar cycle 23. More flares could be in the offing as AR1625 emerges in close proximity to another active sunspot, AR1623. If the magnetic canopies of the two sunspots intermingle, they could reconnect and erupt, producing something stronger than a C-flare. www.spaceweather.com/
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Post by clone on Dec 21, 2012 16:24:36 GMT -8
FARSIDE SOLAR ACTIVITY: The Earthside of the sun remains quiet, but the farside is growing restless. During the late hours of Dec. 20th and continuing through Dec. 21st, the Solar and Heliospheric Observatory (SOHO) has recorded a series of CMEs flying over the solar limb: The source of the clouds appears to be multiple blast sites on the farside of the sun. This means Earth is not in the line of fire. The increasing pace of farside activity, however, suggests that the Earthside might not be far behind. Stay tuned for changes. www.spaceweather.com/
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Post by clone on Mar 5, 2013 22:57:59 GMT -8
Sun's Weather Cycle May Actually Peak Twice This Year by Mike Wall, SPACE.com Senior Writer Date: 05 March 2013 Time: 10:36 AM ET The sun is surprisingly quiet at the moment, but that may be because our star is gearing up for the second phase of a one-two wallop in its 11-year activity cycle, some scientists say. www.livescience.com/27638-sun-solar-weather-cycle-peak.html
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Post by Pi Day on Mar 14, 2013 15:58:26 GMT -8
CHANCE OF STORMS: NOAA forecasters estimate a 65% chance of polar geomagnetic storms on March 15th when a CME might deliver a glancing blow to Earth's magnetic field. The CME was launched by a filament of solar magnetism that erupted on March 12th. High-latitude sky watchers should be alert for auroras when the cloud arrives. HAPPY DAY: March 14th (3.14) is day and all around the world mathematicians are celebrating this compelling and mysterious constant of Nature. Pi appears in equations describing the orbits of planets, the colors of auroras, the structure of DNA. It's everywhere. www.spaceweather.com/Sun spits out two CMEs - March 13, 2013 The sun recently erupted with two coronal mass ejections (CMEs). One began at 8:36 p.m. EDT on March 12, 2013 and is directed toward three NASA spacecraft, Spitzer, Kepler and Epoxi. There is, however, no particle radiation associated with this event, which is what would normally concern operators of interplanetary spacecraft since the particles can trip computer electronics on board. A second CME began at 6:54 a.m. EDT on March 13, 2013 and its flank may pass by Earth at a speed that does not typically have a significant impact at Earth. Read more at: phys.org/news/2013-03-sun-cmes.htmlmysolaralerts.blogspot.ca/2013/03/long-duration-c-class-flare-in-progress.html
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Post by st paddys on Mar 16, 2013 8:30:28 GMT -8
WILL THE SKY TURN GREEN ON ST. PATRICK'S DAY? A magnetic filament snaking around sunspot AR1692 erupted on March 15th at about 0600 UT. The slow explosion, which took hours to unfold, produced an M1-class solar flare and a bright CME. SOHO (the Solar and Heliospheric Observatory) photographed the expanding cloud, which is heading directly toward Earth: www.spaceweather.com/
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Post by AR1748 on May 16, 2013 17:33:20 GMT -8
POSSIBLE CME IMPACT ON MAY 17: A coronal mass ejection (CME) hurled into space by the X1-flare of May 15th might deliver a glancing blow to Earth's magnetic field on May 17th. NOAA forecasters estimate a 40% chance of polar geomagnetic storms when the cloud arrives. High-latitude sky watchers should be alert for auroras. Aurora alerts: text, voice. X-FLARE THREAT CONTINUES: Sunspot AR1748 has already unleashed four X-class solar flares, but it might not be finished. The active region continues to grow beneath a delta-class magnetic field that harbors energy for powerful eruptions. NOAA puts the odds of another X-flare today at 60%. Solar flare alerts: text, voice. NASA's Solar Dynamics Observatory took this picture of AR1748 during the early hours of May 16th: The sunspot is not particularly large, but it is complex, with many dark cores scattered through its zone of influence. This is a sign of a complicated overlying magnetic field. Magnetic complexity is the source of AR1748's explosiveness: when tangled lines of magnetic force cross and reconnect--bang! A flare occurs. All by itself, AR1748 has produced more X-flares than every other sunspot of the past year combined. In summary, AR1748 has given us an X1.7-class flare (0217 UT on May 13), an X2.8-class flare (1609 UT on May 13), an X3.2-class flare (0117 UT on May 14), and an X1-class flare (0152 on May 15). More could be in the offing. www.spaceweather.com/
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Post by clone on Jun 7, 2013 19:10:29 GMT -8
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Post by clone on Oct 17, 2013 8:28:30 GMT -8
SLOW CME, INCOMING(350 km/s) ejection on Oct. 16th. The cloud appears set to deliver on Oct. 20th. Odds of a geomagnetic storm are low. spaceweather.com/
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Post by UV on Oct 23, 2013 19:33:34 GMT -8
SOLAR FLARE! Earth-facing sunspot AR1877 erupted on Oct. 24th at 00:30 UT (Oct. 23rd at 5:30 pm PDT), producing an M9-class solar flare. A flash of extreme UV radiation from the flare ionized Earth's upper atmosphere and created a brief HF radio blackout on the sunlit side of the planet. Stay tuned for updates about this significant event. www.spaceweather.com/
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Post by AR1877 on Oct 24, 2013 8:46:10 GMT -8
Data Outage Announcement lasco-www.nrl.navy.mil/The realtime LASCO images (JavaScript movies, javagif directories, etc, are currently offline while we restore a server. We apologize for the inconvenience and direct you to the SOHO Website for realtime images and data. SOHO LASCO C3 Latest Image
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