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 w
                    ritten by a professional astronomer.

                               2021 November 9
      [2]The picture shows 244 astronomy images faked using artificial
    intelligence -- and one real astronomy image chosen from APOD. Please
             see the explanation for more detailed information.

                All of These Space Images are Fake Except One
        Image Credit: [3]M. J. Smith [4]et al. ([5]U. Hertfordshire)

   Explanation: Why would you want to fake a universe? For one reason --
   to better understand [6]our real universe. Many [7]astronomical
   projects seeking to learn properties of our universe now start with a
   [8]robotic telescope taking sequential images of the night sky. Next,
   sophisticated [9]computer algorithms crunch these digital images to
   find [10]stars and [11]galaxies and measure their properties. To
   calibrate these algorithms, it is useful to test them on [12]fake
   images from a [13]fake universe to see if the algorithms can correctly
   deduce purposely imprinted properties. The [14]featured mosaic of fake
   images was created to specifically mimic the images that have appeared
   on [15]NASA's [16]Astronomy Picture of the Day ([17]APOD). Only [18]one
   image of the 225 images is real -- can you find [19]it? The
   accomplished deceptors have made available individual fake APOD images
   that can be displayed by accessing their [20]ThisIsNotAnAPOD webpage or
   [21]Twitter feed. More useful for calibrating and understanding our
   [22]distant universe, however, are fake galaxies -- a sampling of which
   can be seen at their [23]ThisIsNotAGalaxy webpage.

     Astrophysicists: [24]Browse 2,600+ codes in the Astrophysics Source
                                Code Library
                     Tomorrow's picture: gone in a flash
     __________________________________________________________________

      [25]< | [26]Archive | [27]Submissions | [28]Index | [29]Search |
   [30]Calendar | [31]RSS | [32]Education | [33]About APOD | [34]Discuss |
                                    [35]>
     __________________________________________________________________

    Authors & editors: [36]Robert Nemiroff ([37]MTU) & [38]Jerry Bonnell
                                 ([39]UMCP)
          NASA Official: Phillip Newman [40]Specific rights apply.
              [41]NASA Web Privacy Policy and Important Notices
                A service of: [42]ASD at [43]NASA / [44]GSFC
                           & [45]Michigan Tech. U.

References

   1. https://apod.nasa.gov/apod/archivepix.html
   2. https://apod.nasa.gov/apod/image/2111/AIapods01_Geach_3840.jpg
   3. https://www.mjjsmith.com/
   4. https://ui.adsabs.harvard.edu/abs/2021arXiv211101713S/abstract
   5. https://www.herts.ac.uk/research/centres/car
   6. https://apod.nasa.gov/apod/ap210802.html
   7. https://www.desi.lbl.gov/
   8. https://apod.nasa.gov/apod/ap980617.html
   9. https://ascl.net/
  10. https://science.nasa.gov/astrophysics/focus-areas/how-do-stars-form-and-evolve
  11. https://science.nasa.gov/astrophysics/focus-areas/what-are-galaxies
  12. https://pyxis.nymag.com/v1/imgs/2bf/ab0/4475d06d113fb460a24eb97d81ca6a869a-lioncat.jpg
  13. https://apod.nasa.gov/apod/ap200223.html
  14. https://ui.adsabs.harvard.edu/abs/2021arXiv211101713S/abstract
  15. https://www.nasa.gov/
  16. https://apod.nasa.gov/apod.nasa.gov/
  17. https://apod.nasa.gov/apod/lib/about_apod.html
  18. https://en.wikiquote.org/wiki/Arthur_C._Clarke#1980s
  19. https://apod.nasa.gov/apod/ap200906.html
  20. https://www.mjjsmith.com/thisisnotanapod/
  21. https://twitter.com/ThisIsNotAnApod
  22. https://www.jwst.nasa.gov/content/science/index.html
  23. https://www.mjjsmith.com/thisisnotagalaxy/
  24. http://ascl.net/
  25. https://apod.nasa.gov/apod/ap211108.html
  26. https://apod.nasa.gov/apod/archivepix.html
  27. https://apod.nasa.gov/apod/lib/apsubmit2015.html
  28. https://apod.nasa.gov/apod/lib/aptree.html
  29. https://antwrp.gsfc.nasa.gov/cgi-bin/apod/apod_search
  30. https://apod.nasa.gov/apod/calendar/allyears.html
  31. https://apod.nasa.gov/apod.rss
  32. https://apod.nasa.gov/apod/lib/edlinks.html
  33. https://apod.nasa.gov/apod/lib/about_apod.html
  34. http://asterisk.apod.com/discuss_apod.php?date=211109
  35. https://apod.nasa.gov/apod/ap211110.html
  36. http://www.phy.mtu.edu/faculty/Nemiroff.html
  37. http://www.phy.mtu.edu/
  38. https://antwrp.gsfc.nasa.gov/htmltest/jbonnell/www/bonnell.html
  39. http://www.astro.umd.edu/
  40. https://apod.nasa.gov/apod/lib/about_apod.html#srapply
  41. https://www.nasa.gov/about/highlights/HP_Privacy.html
  42. https://astrophysics.gsfc.nasa.gov/
  43. https://www.nasa.gov/
  44. https://www.nasa.gov/centers/goddard/
  45. http://www.mtu.edu/