MSGID: 1:153/757.0 686ac8bb   
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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.   
      
                                    2023 May 29   
      A shoreline glowing with blue bioluminescent plankton is shown, with a   
          stand of trees in the distance. Above all is a starry sky which   
        includes red nebulae and the central band of our Milky Way Galaxy.   
             Please see the explanation for more detailed information.   
      
                       Milky Way over a Turquoise Wonderland   
      Image Credit & Copyright: Petr Hor+ílek / Institute of Physics in Opava,   
                                    Sovena Jani   
      
      Explanation: What glows there? The answer depends: sea or sky? In the   
      sea, the unusual blue glow is bioluminescence. Specifically, the   
      glimmer arises from Noctiluca scintillans, single-celled plankton   
      stimulated by the lapping waves. The plankton use their glow to startle   
      and illuminate predators. This mid-February display on an island in the   
      Maldives was so intense that the astrophotographer described it as a   
      turquoise wonderland. In the sky, by contrast, are the more familiar   
      glows of stars and nebulas. The white band rising from the   
      artificially-illuminated green plants is created by billions of stars   
      in the central disk of our Milky Way Galaxy. Also visible in the sky is   
      the star cluster Omega Centauri, toward the left, and the famous   
      Southern Cross asterism in the center. Red-glowing nebulas include the   
      bright Carina Nebula, just right of center, and the expansive Gum   
      Nebula on the upper right.   
      
                         Tomorrow's picture: nebular bell   
        __________________________________________________________________   
      
          Authors & editors: Robert Nemiroff (MTU) & Jerry Bonnell (UMCP)   
               NASA Official: Phillip Newman Specific rights apply.   
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                         A service of: ASD at NASA / GSFC,   
                              NASA Science Activation   
                                & Michigan Tech. U.   
      
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