MSGID: 1:317/3 628e6ec8   
   PID: hpt/lnx 1.9.0-cur 2019-01-08   
   TID: hpt/lnx 1.9.0-cur 2019-01-08   
    EPOD - a service of USRA   
      
   The Earth Science Picture of the Day (EPOD) highlights the diverse processes   
   and phenomena which shape our planet and our lives. EPOD will collect and   
   archive photos, imagery, graphics, and artwork with short explanatory   
   captions and links exemplifying features within the Earth system. The   
   community is invited to contribute digital imagery, short captions and   
   relevant links.   
      
      
    Sun Granules   
      
      May 25, 2022   
      
       Solar granules 18082017 1249   
      
      Photographer:  Matteo Vacca   
      
      Summary Authors:  Matteo Vacca;  Cadan Cummings   
      
      The photograph above shows  granules on the  photosphere of the   
       Sun. These irregularly shaped features are produced by plasma   
      convection currents below the Sun’s surface.  Convection occurs when   
       fusion reactions heat  opaque gases, which causes them to rise   
      to the surface and subsequently emit  energy. Several million   
      granules cover the Sun’s surface at any time; however, they usually   
      last between 8 to 20 minutes before dissipating. To give a sense of   
      scale to the photo, an average solar granule has a diameter of about   
      930 miles or 1500 kilometers. Always  protect your eyes when   
      observing the Sun.   
        * Milis, Sardinia, Italy Coordinates: 40.0487, 8.6370   
      
   Related EPODs   
      
       Sun Granules  Violet and Green Flashes at Sunset  Panoramic   
      View of Etna and the Winter Solstice  Solar Eclipse From the Air   
      Over the South Atlantic Ocean  Clouds In a Fiery Sunset  Analemma   
      Observed in Taipei, Taiwan   
       More...   
      
   Sun Links   
      
        *  NASA Solar Dynamics Observatory   
        *  NASA Solar Eclipse Page   
        *  NOAA Solar Calculator   
        *  The Sun-Earth Connection: Heliophysics   
        *  The Sunspot Cycle   
        *  Solar System Exploration: The Sun   
        *  The Sun Now   
        *  This Week’s Sky   
      
   -   
      Earth Science Picture of the Day is a service of the  Universities   
      Space Research Association.   
      
   https://epod.usra.edu   
       
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