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Solar Winds Triggered By Magnetic Fields London, UK (SPX) Nov 04, 2009 
Solar wind generated by the sun is probably driven by a process involving powerful magnetic fields, according to a new study led by UCL researchers based on the latest observations from the Hinode satellite. Scientists have long speculated on the source of solar winds. The Extreme Ultraviolet Imaging Spectrometer (EIS), on board the Japanese-UK-US Hinode satellite, is now generating ... read moreThe Sun's Sneaky Variability 
Huntsville AL (SPX) Oct 28, 2009Every 11 years, the sun undergoes a furious upheaval. Dark sunspots burst forth from beneath the sun's surface. Explosions as powerful as a billion atomic bombs spark intense flares of high-energy radiation. Clouds of gas big enough to swallow planets break away from the sun and billow into space. It's a flamboyant display of stellar power. So why can't we see any of it? Almost none ... more
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MESSENGER Gets Closest Look At Solar-Flare Neutrons
Tempe AZ (SPX) Oct 27, 2009On Dec. 31, 2007, the Sun awoke from the relatively quiescent period between Solar Cycles 23 and 24 to produce a solar flare that spewed high-energy neutrons into interplanetary space. The Neutron Spectrometer flying aboard NASA's MESSENGER spacecraft recorded the event, giving scientists a first-ever, up-close look at neutron production from a solar flare. In fact, it was the first time ... more EVE: Measuring Sun's Hidden Variability 
Greenbelt MD (SPX) Sep 24, 2009Every 11 years, the sun undergoes a furious upheaval. Dark sunspots burst forth from beneath the sun's surface. Explosions as powerful as a billion atomic bombs spark intense flares of high-energy radiation. Clouds of gas big enough to swallow planets break away and billow into space. It's a flamboyant display of stellar power. So why can't we see any of it? Almost none of the drama ... more EVE: Measuring Sun's Hidden Variability
Greenbelt MD (SPX) Sep 23, 2009Every 11 years, the sun undergoes a furious upheaval. Dark sunspots burst forth from beneath the sun's surface. Explosions as powerful as a billion atomic bombs spark intense flares of high-energy radiation. Clouds of gas big enough to swallow planets break away and billow into space. It's a flamboyant display of stellar power. So why can't we see any of it? Almost none of the drama ... more Quiet Sun Bombards Earth With Winds 
Washington DC (SPX) Sep 18, 2009Challenging conventional wisdom, new research finds that the number of sunspots provides an incomplete measure of changes in the Sun's impact on Earth over the course of the 11-year solar cycle. The study finds that Earth was bombarded last year with high levels of solar energy at a time when the Sun was in an unusually quiet phase and sunspots had virtually disappeared. "The Sun continues ... more |
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Small Fluctuations In Solar Activity, Large Influence On The Climate
Bonn, Germany (SPX) Sep 01, 2009Our sun does not radiate evenly. The best known example of radiation fluctuations is the famous 11-year cycle of sun spots. Nobody denies its influence on the natural climate variability, but climate models have, to-date, not been able to satisfactorily reconstruct its impact on climate activity. Researchers from the USA and from Germany have now, for the first time, successfully simulated ... more GOES-O Releases First Solar Image 
Washington DC (SPX) Aug 19, 2009GOES- 14, formerly GOES-O, has achieved another significant milestone with the release of the first formal Solar Image from the Solar X-Ray Imager (SXI). The engineering and operations team has finished its initial instrument calibration and alignments and produced the image of the sun on August 13, 2009 at approximately 10:05 EDT. The SXI instrument is built by Lockheed Martin Advanced ... more Tiny Flares Responsible For Outsized Heat Of Sun's Atmosphere 
Greenbelt MD (SPX) Aug 17, 2009"Why is the sun's corona so darned hot?" asks James Klimchuk, an astrophysicist at the Goddard Space Flight Center's Solar Physics Laboratory in Greenbelt, Md. The mystery of why temperatures in the solar corona, the sun's outer atmosphere, soar to several million degrees Kelvin (K) -much hotter than temperatures nearer the sun's surface-has puzzled scientists for decades. New observations ... more Living In A Dying Solar System Part One 
Moffett Field CA (SPX) Jul 28, 2009There is a lot of hysteria on the Internet these days that the ancient Mayan calendar, which ends in 2012, portends the end of the world through a variety of possible astronomical events: rogue comets, supernovae, or even supposed "energy" from the galactic center. The reality is that the Mayans simply tracked astronomical cycles. They were not psychic. This preoccupation with doomsday has ... more |
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