Astronomy Picture of the Day

   [1]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 November 8
   [2]A deep space image showing many galaxies, some of which are seen in
   a central bar running nearly horizontally across the image. Please see
               the explanation for more detailed information.

                     Perseus Galaxy Cluster from Euclid
     Image Credit & [3]License: [4]ESA, [5]Euclid, [6]Euclid Consortium,
   [7]NASA; Processing: [8]Jean-Charles Cuillandre ([9]CEA Paris-Saclay) &
           [10]Giovanni Anselmi; Text: [11]Jean-Charles Cuillandre

   Explanation: There's a new space telescope in the sky: [12]Euclid.
   Equipped with two large panoramic cameras, [13]Euclid captures light
   from the [14]visible to the near-[15]infrared. It took five hours of
   observing for [16]Euclid's 1.2-meter diameter primary mirror to
   capture, through its [17]sharp optics, the 1000+ galaxies in the
   [18]Perseus cluster, which lies 250 million [19]light years away. More
   than 100,000 galaxies are visible in the background, some as [20]far
   away as 10 billion light years. The revolutionary nature of [21]Euclid
   lies in the combination of its wide field of view (twice the area of
   the full moon), its high angular resolution (thanks to its [22]620
   Megapixel camera), and its infrared vision, which captures both images
   and [23]spectra. [24]Euclid's initial surveys, covering a third of the
   sky and recording over 2 billion galaxies, will enable a [25]study of
   how [26]dark matter and [27]dark energy have shaped [28]our universe.

                           Tomorrow's picture: M1
     __________________________________________________________________

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    Authors & editors: [40]Robert Nemiroff ([41]MTU) & [42]Jerry Bonnell
                                 ([43]UMCP)
          NASA Official: Phillip Newman [44]Specific rights apply.
              [45]NASA Web Privacy Policy and Important Notices
                A service of: [46]ASD at [47]NASA / [48]GSFC,
                         [49]NASA Science Activation
                           & [50]Michigan Tech. U.

References

   1. https://apod.nasa.gov/apod/archivepix.html
   2. https://apod.nasa.gov/apod/image/2311/Perseus_Euclid_4400.jpg
   3. https://creativecommons.org/licenses/by-sa/3.0/igo/
   4. https://www.esa.int/
   5. https://www.esa.int/Science_Exploration/Space_Science/Euclid
   6. https://www.euclid-ec.org/
   7. https://www.nasa.gov/
   8. https://www.facebook.com/jeancharles.cuillandre
   9. https://irfu.cea.fr/en/Phocea/Vie_des_labos/Ast/ast_groupe.php?id_groupe=977&voir=2328
  10. https://www.facebook.com/giovanni.anselmi1/
  11. https://www.iau.org/administration/membership/individual/16206/
  12. https://www.esa.int/Science_Exploration/Space_Science/Euclid
  13. https://en.wikipedia.org/wiki/Euclid_(spacecraft)
  14. https://science.nasa.gov/ems/09_visiblelight/
  15. https://science.nasa.gov/ems/07_infraredwaves/
  16. https://sci.esa.int/web/euclid/-/57042-euclid-primary-mirror
  17. https://images.fineartamerica.com/images/artworkimages/mediumlarge/3/cat-looking-surprised-peering-over-the-edge-of-the-picture-john-daniels.jpg
  18. https://apod.nasa.gov/apod/ap110712.html
  19. https://spaceplace.nasa.gov/light-year/
  20. https://apod.nasa.gov/apod/ap220316.html
  21. https://www.euclid-ec.org/public/science/
  22. https://irfu.cea.fr/dap/en/Phocea/Vie_des_labos/Ast/ast.php?t=fait_marquant&id_ast=4736
  23. https://astronomy.swin.edu.au/cosmos/s/Spectroscopy
  24. https://www.euclid-ec.org/public/data/surveys/
  25. https://youtu.be/-rHGTVJfcWI
  26. https://en.wikipedia.org/wiki/Dark_matter
  27. https://science.nasa.gov/astrophysics/focus-areas/what-is-dark-energy/
  28. https://ui.adsabs.harvard.edu/abs/2008AmJPh..76..265N/abstract
  29. https://apod.nasa.gov/apod/ap231107.html
  30. https://apod.nasa.gov/apod/archivepix.html
  31. https://apod.nasa.gov/apod/lib/apsubmit2015.html
  32. https://apod.nasa.gov/apod/lib/aptree.html
  33. https://antwrp.gsfc.nasa.gov/cgi-bin/apod/apod_search
  34. https://apod.nasa.gov/apod/calendar/allyears.html
  35. https://apod.com/feed.rss
  36. https://apod.nasa.gov/apod/lib/edlinks.html
  37. https://apod.nasa.gov/apod/lib/about_apod.html
  38. https://asterisk.apod.com/discuss_apod.php?date=231108
  39. https://apod.nasa.gov/apod/ap231109.html
  40. http://www.phy.mtu.edu/faculty/Nemiroff.html
  41. http://www.phy.mtu.edu/
  42. https://antwrp.gsfc.nasa.gov/htmltest/jbonnell/www/bonnell.html
  43. http://www.astro.umd.edu/
  44. https://apod.nasa.gov/apod/lib/about_apod.html#srapply
  45. https://www.nasa.gov/about/highlights/HP_Privacy.html
  46. https://astrophysics.gsfc.nasa.gov/
  47. https://www.nasa.gov/
  48. https://www.nasa.gov/centers/goddard/
  49. https://science.nasa.gov/learners
  50. http://www.mtu.edu/