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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 March 30
    [2]See Explanation. Clicking on the picture will download the highest
                        resolution version available.

                      The Colors of Saturn from Cassini
   Image Credit: [3]NASA, [4]ESA, [5]JPL, [6]ISS, [7]Cassini Imaging Team;
                  Processing & [8]License: [9]Judy Schmidt

   Explanation: What creates Saturn's colors? The [10]featured picture of
   Saturn only slightly exaggerates what a [11]human would see if hovering
   close to the giant ringed world. The image was taken in 2005 by the
   robot [12]Cassini spacecraft that orbited [13]Saturn from 2004 to 2017.
   Here [14]Saturn's majestic rings appear directly only as a curved line,
   appearing brown, in part, from its [15]infrared glow. The rings best
   show their complex structure in the [16]dark shadows they create across
   the upper part of the planet. The northern hemisphere of [17]Saturn can
   appear partly blue for the same reason that [18]Earth's skies can
   appear blue -- molecules in the cloudless portions of both planet's
   atmospheres are better at scattering blue light than red. When looking
   deep into [19]Saturn's clouds, however, the natural gold hue of
   Saturn's clouds becomes dominant. It is [20]not known why southern
   Saturn does not show the same blue hue -- one hypothesis holds that
   clouds are higher there. It is also [21]not known why some of Saturn's
   [22]clouds are colored gold.

                    Activities: [23]NASA Science at Home
                      Tomorrow's picture: galaxy center
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    Authors & editors: [35]Robert Nemiroff ([36]MTU) & [37]Jerry Bonnell
                                 ([38]UMCP)
          NASA Official: Phillip Newman [39]Specific rights apply.
              [40]NASA Web Privacy Policy and Important Notices
                A service of: [41]ASD at [42]NASA / [43]GSFC
                           & [44]Michigan Tech. U.

References

   1. https://apod.nasa.gov/apod/archivepix.html
   2. https://apod.nasa.gov/apod/image/2003/SaturnColors_CassiniSchmidt_1000.jpg
   3. https://www.nasa.gov/
   4. https://www.esa.int/
   5. https://www.jpl.nasa.gov/
   6. http://ciclops.org/iss/iss.php
   7. http://ciclops.org/
   8. https://creativecommons.org/licenses/by/2.0/
   9. https://geckzilla.com/
  10. https://www.flickr.com/photos/geckzilla/12713966445/in/dateposted/
  11. https://apod.nasa.gov/apod/ap190818.html
  12. https://www.esa.int/esaMI/Cassini-Huygens/SEM9D2HHZTD_0.html
  13. https://solarsystem.nasa.gov/planets/saturn/overview/
  14. https://en.wikipedia.org/wiki/Saturn%27s_rings
  15. https://science.nasa.gov/ems/07_infraredwaves
  16. https://www.youtube.com/watch?v=OSbCqp_a3iE
  17. https://www.nasa.gov/mission_pages/cassini/multimedia/pia06177.html
  18. http://math.ucr.edu/home/baez/physics/General/BlueSky/blue_sky.html
  19. https://apod.nasa.gov/apod/ap051010.html
  20. http://honesttopaws.com/wp-content/uploads/2015/11/head-tilt.jpg
  21. https://ui.adsabs.harvard.edu/abs/2004cosp...35..466W/abstract
  22. https://apod.nasa.gov/apod/ap960803.html
  23. https://science.nasa.gov/get-involved/nasaathome
  24. https://apod.nasa.gov/apod/ap200329.html
  25. https://apod.nasa.gov/apod/archivepix.html
  26. https://apod.nasa.gov/apod/lib/apsubmit2015.html
  27. https://apod.nasa.gov/apod/lib/aptree.html
  28. https://antwrp.gsfc.nasa.gov/cgi-bin/apod/apod_search
  29. https://apod.nasa.gov/apod/calendar/allyears.html
  30. https://apod.nasa.gov/apod.rss
  31. https://apod.nasa.gov/apod/lib/edlinks.html
  32. https://apod.nasa.gov/apod/lib/about_apod.html
  33. http://asterisk.apod.com/discuss_apod.php?date=200330
  34. https://apod.nasa.gov/apod/ap200331.html
  35. http://www.phy.mtu.edu/faculty/Nemiroff.html
  36. http://www.phy.mtu.edu/
  37. https://antwrp.gsfc.nasa.gov/htmltest/jbonnell/www/bonnell.html
  38. http://www.astro.umd.edu/
  39. https://apod.nasa.gov/apod/lib/about_apod.html#srapply
  40. https://www.nasa.gov/about/highlights/HP_Privacy.html
  41. https://astrophysics.gsfc.nasa.gov/
  42. https://www.nasa.gov/
  43. https://www.nasa.gov/centers/goddard/
  44. http://www.mtu.edu/