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 August 9
     [2]The picture shows a split image of the Perseid Meteor Shower in
    2020. The left image is from a darker sky and shows more meteors than
    the right. Please see the explanation for more detailed information.

                        Perseus and the Lost Meteors
    Image Credit & Copyright: [3]Tomas Slovinsky ([4]Slovakia) & [5]Petr
        Horalek ([6]Czech Republic; [7]Institute of Physics in Opava)

   Explanation: What's the best way to watch a meteor shower? This
   question might come up later this week when the annual [8]Perseid
   Meteor Shower peaks. One thing that is helpful is a dark sky, as
   demonstrated in the [9]featured composite image of last year's
   [10]Perseids. Many more faint [11]meteors are visible on the left
   image, taken through a very dark sky in [12]Slovakia, than on the right
   image, taken through a moderately dark sky in the [13]Czech Republic.
   The band of the [14]Milky Way Galaxy bridges the [15]two coordinated
   images, while the meteor shower [16]radiant in the [17]constellation of
   [18]Perseus is clearly visible on the left. In sum, many faint meteors
   are lost through a bright sky. [19]Light pollution is shrinking areas
   across [20]our Earth with dark skies, although inexpensive ways to
   [21]combat this might be implemented.

     Notable Perseids Submissions to APOD: [22]2018, [23]2019, [24]2020
                      Tomorrow's picture: fire in space
     __________________________________________________________________

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     __________________________________________________________________

    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/2108/PerseidsLost_SlovinskyHoralek_2048.jpg
   3. https://slovinsky.art/#about
   4. https://en.wikipedia.org/wiki/Slovakia
   5. https://www.petrhoralek.com/#about-1
   6. https://en.wikipedia.org/wiki/Czech_Republic
   7. https://www.slu.cz/phys/en/
   8. https://www.rmg.co.uk/stories/topics/perseid-meteor-shower-guide-uk-when-where-to-see
   9. https://www.petrhoralek.com/?p=22819
  10. https://en.wikipedia.org/wiki/Perseids
  11. https://solarsystem.nasa.gov/skywatching/whats-up/
  12. https://en.wikipedia.org/wiki/Slovakia
  13. https://en.wikipedia.org/wiki/Czech_Republic
  14. https://solarsystem.nasa.gov/resources/285/the-milky-way-galaxy/
  15. https://static.boredpanda.com/blog/wp-content/uploads/2019/04/travelling-cuddling-stray-cats-istanbul-orin-fb12-png__700.jpg
  16. https://apod.nasa.gov/apod/ap200512.html
  17. https://www.iau.org/public/themes/constellations/
  18. https://en.wikipedia.org/wiki/Perseus_(constellation)
  19. https://apod.nasa.gov/apod/ap200408.html
  20. https://apod.nasa.gov/apod/ap160630.html
  21. https://www.darksky.org/light-pollution/light-pollution-solutions/
  22. https://www.facebook.com/media/set/?vanity=APOD.Sky&set=a.1543789772391903
  23. https://www.facebook.com/media/set/?vanity=APOD.Sky&set=a.2051847908252751
  24. https://www.facebook.com/media/set/?vanity=APOD.Sky&set=a.2859552167482317
  25. https://apod.nasa.gov/apod/ap210808.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=210809
  35. https://apod.nasa.gov/apod/ap210810.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/