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The AstronomersNASA SDO - Filament Snap, November 14, 2011
NASA SDO - Filament Snap, November 14, 2011
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And within just a few hours the very massive filament (see post from earlier today) is approx. 1/3 shorter. This movie shows the developments from 13:00 to 16:00 UT on November 14, 2011. A solar prominence (also known as a filament when viewed against the solar disk) is a large, bright feature extending outward from the Sun's surface. Prominences are anchored to the Sun's surface in the photosphere, and extend outwards into the Sun's hot outer atmosphere, called the corona. A prominence forms over timescales of about a day, and stable prominences may persist in the corona for several months, looping hundreds of thousands of miles into space. Scientists are still researching how and why prominences are formed. The red-glowing looped material is plasma, a hot gas comprised of electrically charged hydrogen and helium. The prominence plasma flows along a tangled and twisted structure of magnetic fields generated by the sun's internal dynamo. An erupting prominence occurs when such a structure becomes unstable and bursts outward, releasing the plasma. Credit: NASA SDO
Added on Apr 2, 2012 by deek
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Time: 00:28 | Views: 516 | Comments: 0
  NASA  SDO  Solar  Dynamics  Observatory  AIA  HMI  EVE  filament  prominence  eruption  snap  magnetic  field  sun  space  astronomy 
  Solar astronomy  
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