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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.   
      
                                    2023 May 12   
      
                       Halley Dust, Mars Dust, and Milky Way   
      Image Credit & Copyright: Petr Horalek / Institute of Physics in Opava   
      
      Explanation: Grains of cosmic dust streaked through night skies in   
      early May. Swept up as planet Earth plowed through the debris streams   
      left behind by periodic Comet Halley, the annual meteor shower is known   
      as the Eta Aquarids. This year, the Eta Aquarids peak was visually   
      hampered by May's bright Full Moon, though. But early morning hours   
      surrounding last May's shower of Halley dust were free of moonlight   
      interference. In exposures recorded between April 28 and May 8 in 2022,   
      this composited image shows nearly 90 Eta Aquarid meteors streaking   
      from the shower's radiant in Aquarius over San Pedro de Atacama, Chile.   
      The central Milky Way arcs above in the southern hemisphere's predawn   
      skies. The faint band of light rising from the horizon is Zodiacal   
      light, caused by dust scattering sunlight near our Solar System's   
      ecliptic plane. Along the ecliptic and entrained in the Zodiacal glow   
      are the bright planets Venus, Jupiter, Mars, and Saturn. Of course Mars   
      itself has recently been found to be a likely source of the dust along   
      the ecliptic responsible for creating Zodiacal light.   
      
                      Tomorrow's picture: The Crescent Earth   
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          Authors & editors: Robert Nemiroff (MTU) & Jerry Bonnell (UMCP)   
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                                & Michigan Tech. U.   
      
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