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.

                                 2023 July 3
   [2]Planet Venus is pictured in ultraviolet light. The spherical planet
      appears circular in tan colors with hints of blue. Complex cloud
     patterns are evident. Please see the explanation for more detailed
                                information.

                     Venus in Ultraviolet from Akatsuki
   Image Credit & [3]Copyright: [4]JAXA, [5]Planet-C Project Team; [6]h/t:
                          [7]Mehmet Hakan Özsaraç

   Explanation: Why is Venus so different from Earth? To help find out,
   [8]Japan launched the robotic [9]Akatsuki spacecraft which [10]entered
   orbit around Venus late in 2015 after an unplanned five-year adventure
   around the inner [11]Solar System. Even though [12]Akatsuki was past
   its original planned lifetime, the spacecraft and instruments were
   operating so well that much of its original mission was [13]reinstated.
   Also known as the [14]Venus Climate Orbiter, [15]Akatsuki's instruments
   [16]investigated unknowns about Earth's sister planet, including
   whether [17]volcanoes are still active, whether lightning occurs in the
   dense atmosphere, and why wind speeds [18]greatly exceed the planet's
   rotation speed. In the [19]featured image taken by [20]Akatsuki's UVI
   camera, the day-side of [21]Venus is seen shown with planet-scale
   [22]V-shaped cloud pattern. The image displays three [23]ultraviolet
   colors and indicates a dip in the relative abundance of [24]sulfur
   dioxide shown in faint blue. Analyses of [25]Akatsuki images and data
   has shown, among [26]other discoveries, that Venus has [27]equatorial
   jet similar to [28]Earth's jet stream.

                   Tomorrow's picture: sudden sky surprise
     __________________________________________________________________

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    Authors & editors: [40]Robert Nemiroff ([41]MTU) & [42]Jerry Bonnell
                                 ([43]UMCP)
          NASA Official: Phillip Newman [44]Specific rights apply.
              [45]NASA Web Privacy Policy and Important Notices
                A service of: [46]ASD at [47]NASA / [48]GSFC,
                         [49]NASA Science Activation
                           & [50]Michigan Tech. U.

References

   1. https://apod.nasa.gov/apod/archivepix.html
   2. https://apod.nasa.gov/apod/image/2307/VenusUv_akatsuki_1024.jpg
   3. https://www.isas.jaxa.jp/en/imagepolicy/
   4. https://global.jaxa.jp/
   5. https://global.jaxa.jp/projects/sas/planet_c/
   6. https://en.wikipedia.org/wiki/Hat_tip
   7. https://www.flickr.com/photos/mhozsarac/
   8. https://en.wikipedia.org/wiki/Japan
   9. http://global.jaxa.jp/article/2016/interview/vol95/index.html
  10. http://global.jaxa.jp/press/2015/02/20150206_akatsuki.html
  11. http://solarsystem.nasa.gov/planets/
  12. https://en.wikipedia.org/wiki/Akatsuki_(spacecraft)
  13. http://spaceflightnow.com/2016/05/17/japanese-orbiter-officially-begins-science-mission-at-venus/
  14. http://solarsystem.nasa.gov/planets/venus/indepth
  15. https://www.youtube.com/watch?v=GsDj-KJe65s
  16. http://www.gapphotos.com/images/WebPreview/0100/0100358.jpg
  17. https://apod.nasa.gov/apod/ap950928.html
  18. http://phys.org/news/2010-05-theory-superrotation-venus.html
  19. https://akatsuki.isas.jaxa.jp/en/gallery/data/001105.html
  20. http://solarsystem.nasa.gov/missions/akatsuki
  21. https://solarsystem.nasa.gov/planets/venus/overview/
  22. https://apod.nasa.gov/apod/ap200915.html
  23. https://science.nasa.gov/ems/10_ultravioletwaves
  24. https://en.wikipedia.org/wiki/Sulfur_dioxide
  25. https://darts.jaxa.jp/planet/project/akatsuki/
  26. https://en.wikipedia.org/wiki/Akatsuki_(spacecraft)#Science
  27. https://global.jaxa.jp/projects/sat/planet_c/topics.html#topics10633
  28. https://en.wikipedia.org/wiki/Jet_stream
  29. https://apod.nasa.gov/apod/ap230702.html
  30. https://apod.nasa.gov/apod/archivepix.html
  31. https://apod.nasa.gov/apod/lib/apsubmit2015.html
  32. https://apod.nasa.gov/apod/lib/aptree.html
  33. https://antwrp.gsfc.nasa.gov/cgi-bin/apod/apod_search
  34. https://apod.nasa.gov/apod/calendar/allyears.html
  35. https://apod.nasa.gov/apod.rss
  36. https://apod.nasa.gov/apod/lib/edlinks.html
  37. https://apod.nasa.gov/apod/lib/about_apod.html
  38. https://asterisk.apod.com/discuss_apod.php?date=230703
  39. https://apod.nasa.gov/apod/ap230704.html
  40. http://www.phy.mtu.edu/faculty/Nemiroff.html
  41. http://www.phy.mtu.edu/
  42. https://antwrp.gsfc.nasa.gov/htmltest/jbonnell/www/bonnell.html
  43. http://www.astro.umd.edu/
  44. https://apod.nasa.gov/apod/lib/about_apod.html#srapply
  45. https://www.nasa.gov/about/highlights/HP_Privacy.html
  46. https://astrophysics.gsfc.nasa.gov/
  47. https://www.nasa.gov/
  48. https://www.nasa.gov/centers/goddard/
  49. https://science.nasa.gov/learners
  50. http://www.mtu.edu/