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 15

         IFRAME: [2]https://www.youtube.com/embed/PpyPgJHKxSw?rel=0

                     The Snows of Churyumov-Gerasimenko
             Images Credit: [3]ESA, [4]Rosetta, [5]MPS, OSIRIS;
                     UPD/LAM/IAA/SSO/INTA/UPM/DASP/IDA;
                      Animation: [6]Jacint Roger Perez

   Explanation: [7]You couldn't really be caught in this blizzard while
   standing by a cliff on [8]Churyumov-Gerasimenko. Orbiting the comet --
   frequently abbreviated as 67P or CG -- in June of 2016, the [9]Rosetta
   spacecraft's narrow angle camera did record streaks of dust and ice
   particles -- similar to [10]snow -- as they drifted across the field of
   view near the camera and [11]above the comet's surface. Some of the
   [12]bright specks in the scene, however, are likely due to a rain of
   energetic charged particles or [13]cosmic rays hitting the camera, and
   the dense background of [14]stars in the direction of the constellation
   of the Big Dog ([15]Canis Major). In [16]the featured video, these
   background stars are easy to spot trailing from top to bottom. The
   stunning movie was constructed from 33 [17]consecutive images taken
   over 25 minutes while Rosetta cruised some 13 kilometers from [18]the
   comet's nucleus.

                      Tomorrow's picture: almost saturn
     __________________________________________________________________

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    Authors & editors: [30]Robert Nemiroff ([31]MTU) & [32]Jerry Bonnell
                                 ([33]UMCP)
          NASA Official: Phillip Newman [34]Specific rights apply.
              [35]NASA Web Privacy Policy and Important Notices
                A service of: [36]ASD at [37]NASA / [38]GSFC
                           & [39]Michigan Tech. U.

References

   1. https://apod.nasa.gov/apod/archivepix.html
   2. https://www.youtube.com/embed/PpyPgJHKxSw?rel=0
   3. http://www.esa.int/
   4. http://rosetta.esa.int/
   5. http://www.mps.mpg.de/en
   6. https://twitter.com/landru79
   7. https://www.sondasespaciales.com/portada/2018/04/nuevas-imagenes-de-rosetta-el-cometa-67-p-como-nunca-lo-habias-visto/
   8. https://solarsystem.nasa.gov/asteroids-comets-and-meteors/comets/67p-churyumov-gerasimenko/in-depth/
   9. https://sci.esa.int/web/rosetta
  10. https://en.wikipedia.org/wiki/The_Snows_of_Kilimanjaro_(short_story)
  11. https://apod.nasa.gov/apod/ap170331.html
  12. https://www.newscientist.com/article/2167224-amazing-gif-shows-dust-and-cosmic-rays-raining-down-on-comet-67p/
  13. https://www.nasa.gov/press-release/goddard/2016/ace-cosmic-ray
  14. https://twitter.com/markmccaughrean/status/988729672870612992
  15. https://en.wikipedia.org/wiki/Canis_Major
  16. https://apod.nasa.gov/apod/image/1804/RosettaOsirisC67P_JacintRoger.gif
  17. https://imagearchives.esac.esa.int/index.php?/category/410/start-72#top
  18. https://apod.nasa.gov/apod/ap200127.html
  19. https://apod.nasa.gov/apod/ap200314.html
  20. https://apod.nasa.gov/apod/archivepix.html
  21. https://apod.nasa.gov/apod/lib/apsubmit2015.html
  22. https://apod.nasa.gov/apod/lib/aptree.html
  23. https://antwrp.gsfc.nasa.gov/cgi-bin/apod/apod_search
  24. https://apod.nasa.gov/apod/calendar/allyears.html
  25. https://apod.nasa.gov/apod.rss
  26. https://apod.nasa.gov/apod/lib/edlinks.html
  27. https://apod.nasa.gov/apod/lib/about_apod.html
  28. http://asterisk.apod.com/discuss_apod.php?date=200315
  29. https://apod.nasa.gov/apod/ap200316.html
  30. http://www.phy.mtu.edu/faculty/Nemiroff.html
  31. http://www.phy.mtu.edu/
  32. https://antwrp.gsfc.nasa.gov/htmltest/jbonnell/www/bonnell.html
  33. http://www.astro.umd.edu/
  34. https://apod.nasa.gov/apod/lib/about_apod.html#srapply
  35. https://www.nasa.gov/about/highlights/HP_Privacy.html
  36. https://astrophysics.gsfc.nasa.gov/
  37. https://www.nasa.gov/
  38. https://www.nasa.gov/centers/goddard/
  39. http://www.mtu.edu/