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   CHRS: LATIN-1 2   
                           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 July 28   
      
                                     Sun Dance   
         Video Credit: NASA, SDO; Processing: Alan Watson via Helioviewer   
      
      Explanation: Sometimes, the surface of our Sun seems to dance. In the   
      middle of 2012, for example, NASA's Sun-orbiting Solar Dynamic   
      Observatory spacecraft imaged an impressive prominence that seemed to   
      perform a running dive roll like an acrobatic dancer. The dramatic   
      explosion was captured in ultraviolet light in the featured time-lapse   
      video covering about three hours. A looping magnetic field directed the   
      flow of hot plasma on the Sun. The scale of the dancing prominence is   
      huge -- the entire Earth would easily fit under the flowing arch of hot   
      gas. 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 still a   
      topic of research. Like in 2012, this year the Sun's surface is again   
      quite active and features many filaments and prominences.   
      
                        Tomorrow's picture: milky way mound   
        __________________________________________________________________   
      
          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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