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.

                                 2022 May 22
    [2]The featured image is a very short video showing the Sun's surface
       reacting to a large solar flare. The result is a large circular
     shockwave that begins to circle the Sun. The image was taken by the
    Optical Solar Patrol Network telescope in New Mexico in 2006. Please
             see the explanation for more detailed information.

                    A Large Tsunami Shock Wave on the Sun
     Image Credit: [3]NSO/[4]AURA/[5]NSF and [6]USAF Research Laboratory

   Explanation: Tsunamis this large don't happen on Earth. During 2006, a
   large solar flare from an Earth-sized [7]sunspot produced a
   [8]tsunami-type shock wave that was [9]spectacular even for the Sun.
   [10]Pictured here, the [11]tsunami wave was captured moving out from
   active region AR 10930 by the [12]Optical Solar Patrol Network (OSPAN)
   telescope in [13]New Mexico, [14]USA. The resulting [15]shock wave,
   known technically as a [16]Moreton wave, compressed and heated up
   gasses including [17]hydrogen in the [18]photosphere of the Sun,
   causing a momentarily brighter glow. The featured image was taken in a
   [19]very specific red color emitted exclusively by hydrogen gas. The
   [20]rampaging tsunami took out some active [21]filaments on the Sun,
   although many re-established themselves later. The [22]solar tsunami
   spread at nearly one million kilometers per hour, and circled the
   entire [23]Sun in a matter of minutes.

                 Tomorrow's picture: andromeda now and again
     __________________________________________________________________

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    Authors & editors: [35]Robert Nemiroff ([36]MTU) & [37]Jerry Bonnell
                                 ([38]UMCP)
          NASA Official: Phillip Newman [39]Specific rights apply.
              [40]NASA Web Privacy Policy and Important Notices
                A service of: [41]ASD at [42]NASA / [43]GSFC
                           & [44]Michigan Tech. U.

References

   1. https://apod.nasa.gov/apod/archivepix.html
   2. https://apod.nasa.gov/apod/image/2205/SunTsunami_nso_900.gif
   3. https://www.nso.edu/
   4. https://www.aura-astronomy.org/
   5. https://www.nsf.gov/
   6. https://www.afrl.af.mil/
   7. https://apod.nasa.gov/apod/ap060502.html
   8. https://en.wikipedia.org/wiki/Tsunami
   9. https://www.sadanduseless.com/wp-content/uploads/2018/11/funny-suprised-cat2.jpg
  10. https://nso.edu/press-release/telescope-spots-solar-tsunami/
  11. https://youtu.be/kOM_ROx6gbo
  12. https://www.sciencesource.com/archive/Image/Optical-Solar-Patrol-Network-SS2827602.html
  13. https://en.wikipedia.org/wiki/New_Mexico
  14. https://en.wikipedia.org/wiki/United_States_of_America
  15. https://apod.nasa.gov/apod/ap210414.html
  16. https://en.wikipedia.org/wiki/Moreton_wave
  17. https://periodic.lanl.gov/1.shtml
  18. https://solarscience.msfc.nasa.gov/surface.shtml
  19. https://en.wikipedia.org/wiki/H-alpha
  20. https://youtu.be/Z-2khcTHIgs
  21. https://apod.nasa.gov/apod/ap041206.html
  22. https://www.nasa.gov/mission_pages/stereo/news/solar_tsunami.html
  23. https://spaceplace.nasa.gov/all-about-the-sun/en/
  24. https://apod.nasa.gov/apod/ap220521.html
  25. https://apod.nasa.gov/apod/archivepix.html
  26. https://apod.nasa.gov/apod/lib/apsubmit2015.html
  27. https://apod.nasa.gov/apod/lib/aptree.html
  28. https://antwrp.gsfc.nasa.gov/cgi-bin/apod/apod_search
  29. https://apod.nasa.gov/apod/calendar/allyears.html
  30. https://apod.nasa.gov/apod.rss
  31. https://apod.nasa.gov/apod/lib/edlinks.html
  32. https://apod.nasa.gov/apod/lib/about_apod.html
  33. http://asterisk.apod.com/discuss_apod.php?date=220522
  34. https://apod.nasa.gov/apod/ap220523.html
  35. http://www.phy.mtu.edu/faculty/Nemiroff.html
  36. http://www.phy.mtu.edu/
  37. https://antwrp.gsfc.nasa.gov/htmltest/jbonnell/www/bonnell.html
  38. http://www.astro.umd.edu/
  39. https://apod.nasa.gov/apod/lib/about_apod.html#srapply
  40. https://www.nasa.gov/about/highlights/HP_Privacy.html
  41. https://astrophysics.gsfc.nasa.gov/
  42. https://www.nasa.gov/
  43. https://www.nasa.gov/centers/goddard/
  44. http://www.mtu.edu/