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                           Astronomy Picture of the Day   
      
       Discover the cosmos! Each day a different image or photograph of our   
         fascinating universe is featured, along with a brief explanation   
                       written by a professional astronomer.   
      
                                  2024 August 18   
      
                       A Solar Prominence Eruption from SDO   
                      Image Credit: NASA/Goddard/SDO AIA Team   
      
      Explanation: One of the most spectacular solar sights is an erupting   
      prominence. In 2011, NASA's Sun-orbiting Solar Dynamic Observatory   
      spacecraft imaged an impressively large prominence erupting from the   
      surface. The dramatic explosion was captured in ultraviolet light in   
      the featured time lapse video covering 90 minutes, where a new frame   
      was taken every 24 seconds. The scale of the prominence is huge -- the   
      entire Earth would easily fit under the flowing curtain of hot gas. A   
      solar prominence is channeled and sometimes held above the Sun's   
      surface by the Sun's magnetic field. A quiescent prominence typically   
      lasts about a month and may erupt in a Coronal Mass Ejection (CME)   
      expelling hot gas into the Solar System. The energy mechanism that   
      creates a solar prominence is a continuing topic of research. Our Sun   
      is again near solar maximum and so very active, featuring numerous   
      erupting prominences and CMEs, one of which resulted in picturesque   
      auroras just over the past week.   
      
                          Tomorrow's picture: star cocoon   
        __________________________________________________________________   
      
          Authors & editors: Robert Nemiroff (MTU) & Jerry Bonnell (UMCP)   
               NASA Official: Amber Straughn Specific rights apply.   
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                         A service of: ASD at NASA / GSFC,   
                              NASA Science Activation   
                                & Michigan Tech. U.   
      
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