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.

                               2019 October 19
    [2]See Explanation. Clicking on the picture will download the highest
                        resolution version available.

                 All Female Spacewalk Repairs Space Station
                 Image Credit: [3]NASA TV, [4]Expedition 61

   Explanation: The failed unit was beyond the reach of the robotic
   [5]Canadarm2. Therefore, this repair of the [6]International Space
   Station would require humans. The humans on duty were NASA's [7]Jessica
   Meir and [8]Christina Koch. This was the fourth spacewalk for Meir, the
   first for Koch, and the [9]first all-female spacewalk in human history.
   The first woman to walk in space was [10]Svetlana Savitskaya in 1984.
   Koch (red stripe) and Weir are [11]pictured hard at work on the [12]P6
   Truss, with solar panels and the darkness of space in the background.
   [13]Working over seven hours, the newly installed [14]Battery Charge /
   Discharge Unit (BCDU) was successfully replaced and, when powered up,
   operated normally.

                     Tomorrow's picture: Pluto at Night
     __________________________________________________________________

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    Authors & editors: [26]Robert Nemiroff ([27]MTU) & [28]Jerry Bonnell
                                 ([29]UMCP)
          NASA Official: Phillip Newman [30]Specific rights apply.
              [31]NASA Web Privacy Policy and Important Notices
                A service of: [32]ASD at [33]NASA / [34]GSFC
                           & [35]Michigan Tech. U.

References

   1. https://apod.nasa.gov/apod/archivepix.html
   2. https://apod.nasa.gov/apod/image/1910/KochMeirISS_NASA_734.jpg
   3. https://www.nasa.gov/
   4. https://www.nasa.gov/mission_pages/station/expeditions/expedition61/index.html
   5. http://www.asc-csa.gc.ca/eng/iss/canadarm2/default.asp
   6. https://apod.nasa.gov/apod/ap151109.html
   7. https://www.nasa.gov/astronauts/biographies/jessica-u-meir/biography
   8. https://www.nasa.gov/astronauts/biographies/christina-h-koch
   9. https://www.nasa.gov/mediacast/space-to-ground-history-made-10182019
  10. https://en.wikipedia.org/wiki/Svetlana_Savitskaya
  11. https://blogs.nasa.gov/spacestation/2019/10/18/nasa-astronauts-wrap-up-historic-all-woman-spacewalk/
  12. https://en.wikipedia.org/wiki/Integrated_Truss_Structure
  13. https://www.nasaspaceflight.com/2019/10/failed-battery-charge-discharge-unit-replacement-spacewalk/
  14. https://en.wikipedia.org/wiki/Electrical_system_of_the_International_Space_Station#Power_management_and_distribution
  15. https://apod.nasa.gov/apod/ap191018.html
  16. https://apod.nasa.gov/apod/archivepix.html
  17. https://apod.nasa.gov/apod/lib/apsubmit2015.html
  18. https://apod.nasa.gov/apod/lib/aptree.html
  19. https://antwrp.gsfc.nasa.gov/cgi-bin/apod/apod_search
  20. https://apod.nasa.gov/apod/calendar/allyears.html
  21. https://apod.nasa.gov/apod.rss
  22. https://apod.nasa.gov/apod/lib/edlinks.html
  23. https://apod.nasa.gov/apod/lib/about_apod.html
  24. http://asterisk.apod.com/discuss_apod.php?date=191019
  25. https://apod.nasa.gov/apod/ap191020.html
  26. http://www.phy.mtu.edu/faculty/Nemiroff.html
  27. http://www.phy.mtu.edu/
  28. https://antwrp.gsfc.nasa.gov/htmltest/jbonnell/www/bonnell.html
  29. http://www.astro.umd.edu/
  30. https://apod.nasa.gov/apod/lib/about_apod.html#srapply
  31. https://www.nasa.gov/about/highlights/HP_Privacy.html
  32. https://astrophysics.gsfc.nasa.gov/
  33. https://www.nasa.gov/
  34. https://www.nasa.gov/centers/goddard/
  35. http://www.mtu.edu/