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.

                                2019 July 31

                        IC 1795: The Fishhead Nebula
                     Image Credit & Copyright: Alan Pham

   Explanation: To some, this nebula looks like the head of a fish.
   However, this colorful cosmic portrait really features glowing gas and
   obscuring dust clouds in IC 1795, a star forming region in the northern
   constellation Cassiopeia. The nebula's colors were created by adopting
   the Hubble color palette for mapping narrow emission from oxygen,
   hydrogen, and sulfur atoms to blue, green and red colors, and further
   blending the data with images of the region recorded through broadband
   filters. Not far on the sky from the famous Double Star Cluster in
   Perseus, IC 1795 is itself located next to IC 1805, the Heart Nebula,
   as part of a complex of star forming regions that lie at the edge of a
   large molecular cloud. Located just over 6,000 light-years away, the
   larger star forming complex sprawls along the Perseus spiral arm of our
   Milky Way Galaxy. At that distance, this picture would span about 70
   light-years across IC 1795.

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