Subj : Daily APOD Report
To   : All
From : Alan Ianson
Date : Wed Jan 26 2022 03:28:22

                        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.

                               2022 January 26

                      Stars, Dust, and Gas Near Antares
              Image Credit & Copyright: Mario Cogo (Galax Lux)

   Explanation: Why is the sky near Antares and Rho Ophiuchi so dusty yet
   colorful? The colors result from a mixture of objects and processes.
   Fine dust -- illuminated from the front by starlight -- produces blue
   reflection nebulae. Gaseous clouds whose atoms are excited by
   ultraviolet starlight produce reddish emission nebulae. Backlit dust
   clouds block starlight and so appear dark. Antares, a red supergiant
   and one of the brighter stars in the night sky, lights up the
   yellow-red clouds on the lower right of the featured image. The Rho
   Ophiuchi star system lies at the center of the blue reflection nebula
   on the top left. The distant globular cluster of stars M4 is visible
   above and to the right of Antares. These star clouds are even more
   colorful than humans can see, emitting light across the electromagnetic
   spectrum.

                       Tomorrow's picture: open space
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       Authors & editors: Robert Nemiroff (MTU) & Jerry Bonnell (UMCP)
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