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 September 11
    [2]See Explanation. Clicking on the picture will download the highest
                        resolution version available.

                          The Reappearance of Mars
      Image Credit & [3]Copyright: [4]David Duarte and Romualdo Caldas

   Explanation: [5]Mars reappears just beyond the Moon's dark limb in this
   stack of sharp video frames captured on September 6. Of course to
   reappear it had to disappear [6]in the first place. It did that over an
   hour earlier when the sunlit southern edge of the waning gibbous Moon
   passed in front of [7]the Red Planet as seen from Maceio, Brazil.
   [8]The lunar occultation came as the Moon was near apogee, about
   400,000 kilometers away. Mars was almost 180 times more distant. It was
   the fourth [9]lunar occultation of Mars visible from planet Earth in
   2020. Visible from some southern latitudes, the [10]fifth lunar
   occultation of Mars in 2020 will take place on October 3 when the Moon
   and Mars are both nearly opposite the Sun in planet Earth's sky.

                      Tomorrow's picture: 1,000 Meteors
     __________________________________________________________________

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    Authors & editors: [22]Robert Nemiroff ([23]MTU) & [24]Jerry Bonnell
                                 ([25]UMCP)
          NASA Official: Phillip Newman [26]Specific rights apply.
              [27]NASA Web Privacy Policy and Important Notices
                A service of: [28]ASD at [29]NASA / [30]GSFC
                           & [31]Michigan Tech. U.

References

   1. https://apod.nasa.gov/apod/archivepix.html
   2. https://apod.nasa.gov/apod/image/2009/MarsReappearanceDuarte.jpg
   3. https://apod.nasa.gov/apod/lib/about_apod.html#srapply
   4. https://www.flickr.com/photos/davidduarte_astro/
   5. https://www.flickr.com/photos/davidduarte_astro/50321454723/in/photostream/
   6. https://earthsky.org/astronomy-essentials/photos-moon-mars-september-2020
   7. https://solarsystem.nasa.gov/planets/mars/overview/
   8. https://www.youtube.com/watch?v=mEDg4-ZIjaM&feature=youtu.be&t=9214
   9. http://www.lunar-occultations.com/iota/planets/planets.htm
  10. http://www.lunar-occultations.com/iota/planets/mars.jpg
  11. https://apod.nasa.gov/apod/ap200910.html
  12. https://apod.nasa.gov/apod/archivepix.html
  13. https://apod.nasa.gov/apod/lib/apsubmit2015.html
  14. https://apod.nasa.gov/apod/lib/aptree.html
  15. https://antwrp.gsfc.nasa.gov/cgi-bin/apod/apod_search
  16. https://apod.nasa.gov/apod/calendar/allyears.html
  17. https://apod.nasa.gov/apod.rss
  18. https://apod.nasa.gov/apod/lib/edlinks.html
  19. https://apod.nasa.gov/apod/lib/about_apod.html
  20. http://asterisk.apod.com/discuss_apod.php?date=200911
  21. https://apod.nasa.gov/apod/ap200912.html
  22. http://www.phy.mtu.edu/faculty/Nemiroff.html
  23. http://www.phy.mtu.edu/
  24. https://antwrp.gsfc.nasa.gov/htmltest/jbonnell/www/bonnell.html
  25. http://www.astro.umd.edu/
  26. https://apod.nasa.gov/apod/lib/about_apod.html#srapply
  27. https://www.nasa.gov/about/highlights/HP_Privacy.html
  28. https://astrophysics.gsfc.nasa.gov/
  29. https://www.nasa.gov/
  30. https://www.nasa.gov/centers/goddard/
  31. http://www.mtu.edu/