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 February 20
    [2]The featured image shows White Dome geyser erupting in Yellowstone
    National Park with colorful aurora in the background. Please see the
                 explanation for more detailed information.

                        Aurora Over White Dome Geyser
                 Image Credit & Copyright: [3]Robert Howell

   Explanation: Sometimes both heaven and Earth erupt. Colorful auroras
   erupted unexpectedly a few years ago, with [4]green aurora appearing
   near the horizon and brilliant bands of [5]red aurora blooming high
   overhead. A bright Moon lit the foreground of this picturesque scene,
   while [6]familiar stars could be seen far in the distance. With
   planning, the careful astrophotographer shot this image mosaic in the
   field of [7]White Dome Geyser in [8]Yellowstone National Park in the
   western USA. Sure enough, just after midnight, White Dome [9]erupted --
   spraying a stream of water and vapor many meters into the air.
   [10]Geyser water is heated to steam by [11]scalding magma several
   kilometers below, and rises through rock [12]cracks to the surface.
   About half of all known geysers occur in [13]Yellowstone National Park.
   Although the [14]geomagnetic storm that caused the auroras subsided
   within a day, eruptions of White Dome Geyser continue about every 30
   minutes.

                      Tomorrow's picture: barred spiral
     __________________________________________________________________

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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/2202/geyseraurora_howell_2163.jpg
   3. mailto: Robert at worldwidecookies dot com
   4. https://apod.nasa.gov/apod/ap110517.html
   5. https://apod.nasa.gov/apod/ap120201.html
   6. https://asterisk.apod.com/viewtopic.php?t=29789#p186007
   7. https://en.wikipedia.org/wiki/White_Dome_Geyser
   8. https://youtu.be/3RDYVVmVR2U
   9. https://youtu.be/Q6wUIFNt8-g
  10. https://en.wikipedia.org/wiki/Geyser
  11. https://www.youtube.com/watch?v=xExdEXOaA9A
  12. https://apod.nasa.gov/apod/ap020602.html
  13. https://www.youtube.com/watch?v=eV-RQHPQu2Y
  14. http://science.nasa.gov/science-news/science-at-nasa/1999/ast29dec99_1/
  15. https://apod.nasa.gov/apod/ap220219.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=220220
  25. https://apod.nasa.gov/apod/ap220221.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/