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.

                                2024 April 5
    [2]See Explanation. Clicking on the picture will download the highest
                        resolution version available.

                         The Solar Corona Unwrapped
    Image Credit & [3]Copyright: Peter Ward ([4]Barden Ridge Observatory)

   Explanation: Changes in the [5]alluring solar corona are detailed in
   this [6]creative composite image mapping the dynamic outer atmosphere
   of the Sun during two separate total solar eclipses. Unwrapped from the
   complete circle of the eclipsed Sun's edge to a rectangle and mirrored,
   the entire solar corona is shown during the [7]2017 eclipse (bottom)
   seen from Jackson Hole, Wyoming, and the [8]2023 eclipse from Exmouth,
   Western Australia. While the 2017 eclipse was near a minimum in the
   [9]Sun's 11 year activity cycle, the 2023 eclipse was closer to solar
   maximum. The 2023 solar corona hints at the dramatically different
   character of the active Sun, with many streamers and pinkish
   prominences arising along the solar limb. Of course, the solar corona
   is only easily visible to the eye while standing in the shadow of the
   Moon.

           NASA Coverage: [10]Total Solar Eclipse of 2024 April 8
                       Tomorrow's picture: M51 unwound
     __________________________________________________________________

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    Authors & editors: [22]Robert Nemiroff ([23]MTU) & [24]Jerry Bonnell
                                 ([25]UMCP)
          NASA Official: Amber Straughn [26]Specific rights apply.
               [27]NASA Web Privacy, [28]Accessibility Notices
                A service of: [29]ASD at [30]NASA / [31]GSFC,
                         [32]NASA Science Activation
                           & [33]Michigan Tech. U.

References

   1. https://apod.nasa.gov/apod/archivepix.html
   2. https://apod.nasa.gov/apod/image/2404/CoronaGraph.jpg
   3. https://apod.nasa.gov/apod/lib/about_apod.html#srapply
   4. http://www.atscope.com.au/BRO/bardenridgeobs.html
   5. https://apod.nasa.gov/apod/ap240402.html
   6. http://www.atscope.com.au/BRO/gallery645.html
   7. https://apod.nasa.gov/apod/ap170901.html
   8. https://apod.nasa.gov/apod/ap230516.html
   9. https://apod.nasa.gov/apod/ap231211.html
  10. https://science.nasa.gov/eclipses/future-eclipses/eclipse-2024/
  11. https://apod.nasa.gov/apod/ap240404.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=240405
  21. https://apod.nasa.gov/apod/ap240406.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://www.nasa.gov/general/accessibility/
  29. https://astrophysics.gsfc.nasa.gov/
  30. https://www.nasa.gov/
  31. https://www.nasa.gov/centers/goddard/
  32. https://science.nasa.gov/learners
  33. http://www.mtu.edu/