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                        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.

                                2020 April 5
    [2]See Explanation. Clicking on the picture will download the highest
                        resolution version available.

                             Color the Universe
                            Image Credit: Unknown

   Explanation: Wouldn't it be fun to color in the universe? If you think
   so, please accept this famous astronomical illustration as a
   preliminary substitute. You, [3]your friends, your parents or children,
   can print it out or even [4]color it digitally. While [5]coloring, you
   might be [6]interested to know that even though [7]this illustration
   has appeared in [8]numerous places over the past 100 years, the actual
   artist remains unknown. Furthermore, [9]the work has no accepted name
   -- [10]can you think of a good one? The illustration, [11]first
   appearing in a [12]book by [13]Camille Flammarion in 1888, is [14]used
   frequently to show that humanity's present concepts are susceptible to
   [15]being supplanted by greater truths.

                      Tomorrow's picture: hubble spiral
     __________________________________________________________________

      [16]< | [17]Archive | [18]Submissions | [19]Index | [20]Search |
   [21]Calendar | [22]RSS | [23]Education | [24]About APOD | [25]Discuss |
                                    [26]>
     __________________________________________________________________

    Authors & editors: [27]Robert Nemiroff ([28]MTU) & [29]Jerry Bonnell
                                 ([30]UMCP)
          NASA Official: Phillip Newman [31]Specific rights apply.
              [32]NASA Web Privacy Policy and Important Notices
                A service of: [33]ASD at [34]NASA / [35]GSFC
                           & [36]Michigan Tech. U.

References

   1. https://apod.nasa.gov/apod/archivepix.html
   2. https://apod.nasa.gov/apod/image/1607/BeyondEarth_Unknown_3000.jpg
   3. https://assets3.thrillist.com/v1/image/2524371/size/tmg-article_tall.jpg
   4. https://www.thecolor.com/Category/Coloring/Planets.aspx
   5. http://www.huffingtonpost.com/2014/10/13/coloring-for-stress_n_5975832.html
   6. https://eyes.nasa.gov/curiosity/
   7. https://en.wikipedia.org/wiki/Flammarion_engraving
   8. http://www.historyofinformation.com/detail.php?id=3329
   9. https://www.youtube.com/watch?v=6zp60ODhbb4
  10. http://asterisk.apod.com/discuss_apod.php?date=200405
  11. https://books.google.com/books?id=ScDVAAAAMAAJ&pg=PA163
  12. http://gallica.bnf.fr/ark:/12148/bpt6k408619m/f4.image
  13. https://en.wikipedia.org/wiki/Camille_Flammarion
  14. https://commons.wikimedia.org/wiki/Category:Flammarion_Woodcut
  15. https://apod.nasa.gov/apod/ap010101.html
  16. https://apod.nasa.gov/apod/ap200404.html
  17. https://apod.nasa.gov/apod/archivepix.html
  18. https://apod.nasa.gov/apod/lib/apsubmit2015.html
  19. https://apod.nasa.gov/apod/lib/aptree.html
  20. https://antwrp.gsfc.nasa.gov/cgi-bin/apod/apod_search
  21. https://apod.nasa.gov/apod/calendar/allyears.html
  22. https://apod.nasa.gov/apod.rss
  23. https://apod.nasa.gov/apod/lib/edlinks.html
  24. https://apod.nasa.gov/apod/lib/about_apod.html
  25. http://asterisk.apod.com/discuss_apod.php?date=200405
  26. https://apod.nasa.gov/apod/ap200406.html
  27. http://www.phy.mtu.edu/faculty/Nemiroff.html
  28. http://www.phy.mtu.edu/
  29. https://antwrp.gsfc.nasa.gov/htmltest/jbonnell/www/bonnell.html
  30. http://www.astro.umd.edu/
  31. https://apod.nasa.gov/apod/lib/about_apod.html#srapply
  32. https://www.nasa.gov/about/highlights/HP_Privacy.html
  33. https://astrophysics.gsfc.nasa.gov/
  34. https://www.nasa.gov/
  35. https://www.nasa.gov/centers/goddard/
  36. http://www.mtu.edu/