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.

                              2021 September 17

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

                           Video: Flash on Jupiter
    Video Credit & Copyright: [3]T. Humbert, S. Barré, A. Desmougin & D.
       Walliang ([4]Société Lorraine d'Astronomie), [5]Astroqueyras

   Explanation: There has been a flash on Jupiter. A few days ago, several
   groups monitoring our Solar System's [6]largest planet noticed a
   two-second long burst of light. [7]Such flashes have been [8]seen
   before, with the most famous being a series of [9]impactor strikes in
   1994. Then, fragments of [10]Comet Shoemaker-Levy 9 struck [11]Jupiter
   leaving dark patches that lasted for months. Since then, at least
   [12]seven impacts have been recorded on Jupiter -- usually discovered
   by [13]amateur astronomers. In the [14]featured video, variations in
   the Earth's atmosphere cause Jupiter's image to [15]shimmer when,
   suddenly, a bright flash appears just left of center. Io and its shadow
   [16]are visible on the right. What hit [17]Jupiter will likely
   [18]never be known, but considering what we do know of the nearby
   [19]Solar System, it was likely a piece of rocky and ice -- perhaps the
   size of a bus -- that [20]broke off long-ago from a passing [21]comet
   or [22]asteroid.

                     Tomorrow's picture: Rubin's Galaxy
     __________________________________________________________________

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    Authors & editors: [34]Robert Nemiroff ([35]MTU) & [36]Jerry Bonnell
                                 ([37]UMCP)
          NASA Official: Phillip Newman [38]Specific rights apply.
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                A service of: [40]ASD at [41]NASA / [42]GSFC
                           & [43]Michigan Tech. U.

References

   1. https://apod.nasa.gov/apod/archivepix.html
   2. https://www.youtube.com/embed/ImVl_TfTFEY?rel=0
   3. mailto: contact at astronomie54 dot fr
   4. https://www.astronomie54.fr/
   5. http://astroqueyras.com/
   6. https://solarsystem.nasa.gov/planets/jupiter/overview/
   7. https://www.cieletespace.fr/actualites/3-telescopes-amateurs-francais-detectent-un-impact-sur-jupiter
   8. https://apod.nasa.gov/apod/ap090731.html
   9. https://en.wikipedia.org/wiki/Comet_Shoemaker–Levy_9#Impacts
  10. https://en.wikipedia.org/wiki/Comet_Shoemaker–Levy_9
  11. https://apod.nasa.gov/apod/ap001105.html
  12. https://en.wikipedia.org/wiki/Impact_events_on_Jupiter
  13. https://nightsky.jpl.nasa.gov/
  14. https://youtu.be/ImVl_TfTFEY
  15. https://apod.nasa.gov/apod/ap000725.html
  16. https://skyandtelescope.org/wp-content/plugins/observing-tools/jupiter_moons/jupiter.html
  17. https://apod.nasa.gov/apod/ap190908.html
  18. https://i.pinimg.com/280x280_RS/9b/79/69/9b7969699810176138a9ca6573a2e598.jpg
  19. https://solarsystem.nasa.gov/solar-system/our-solar-system/in-depth/
  20. https://apod.nasa.gov/apod/ap200315.html
  21. https://apod.nasa.gov/apod/ap200722.html
  22. https://apod.nasa.gov/apod/ap200916.html
  23. https://apod.nasa.gov/apod/ap210916.html
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  25. https://apod.nasa.gov/apod/lib/apsubmit2015.html
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  27. https://antwrp.gsfc.nasa.gov/cgi-bin/apod/apod_search
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  29. https://apod.nasa.gov/apod.rss
  30. https://apod.nasa.gov/apod/lib/edlinks.html
  31. https://apod.nasa.gov/apod/lib/about_apod.html
  32. http://asterisk.apod.com/discuss_apod.php?date=210917
  33. https://apod.nasa.gov/apod/ap210918.html
  34. http://www.phy.mtu.edu/faculty/Nemiroff.html
  35. http://www.phy.mtu.edu/
  36. https://antwrp.gsfc.nasa.gov/htmltest/jbonnell/www/bonnell.html
  37. http://www.astro.umd.edu/
  38. https://apod.nasa.gov/apod/lib/about_apod.html#srapply
  39. https://www.nasa.gov/about/highlights/HP_Privacy.html
  40. https://astrophysics.gsfc.nasa.gov/
  41. https://www.nasa.gov/
  42. https://www.nasa.gov/centers/goddard/
  43. http://www.mtu.edu/