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 August 15
   [2]A body of water is seen in front of a night sky. The water reflects
   the sky. In the sky, on the right are green aurora. In the center is an
      orange plume. On the right are three while plumes. Please see the
                 explanation for more detailed information.

                   A Triply Glowing Night Sky over Iceland
    Credit & Copyright: [3]Wioleta Gorecka; Text: [4]Natalia Lewandowska
                              ([5]SUNY Oswego)

   Explanation: The Sun is [6]not the quiet place it seems. [7]It expels
   an unsteady stream of energetic [8]electrons and [9]protons known as
   the [10]solar wind. These charged particles deform the [11]Earth's
   magnetosphere, change paths, and collide with atoms in [12]Earth's
   atmosphere, causing the generation of light in [13]auroras like that
   visible in [14]green in the image left. Earth itself is also
   [15]geologically active and covered with [16]volcanoes. For example,
   [17]Fagradalsfjall volcano in [18]Iceland, seen emitting hot gas in
   orange near the image center. Iceland is one of the most
   [19]geologically active places on Earth. On the far right is the
   [20]Svartsengi geothermal power plant which creates the famous
   human-made [21]Blue Lagoon, shown emitting white gas plumes. The
   [22]featured composition therefore highlights [23]three different sky
   phenomena, including both natural and human-made phenomena.

                    Tomorrow's picture: a cosmic embrace
     __________________________________________________________________

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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]NASA Science Activation
                           & [45]Michigan Tech. U.

References

   1. https://apod.nasa.gov/apod/archivepix.html
   2. https://apod.nasa.gov/apod/image/2308/TripleIceland_Zarzycka_6501.jpg
   3. https://www.instagram.com/wiola.gorecka/?igshid=ff0xckzefdlb
   4. https://www.oswego.edu/physics/natalia-lewandowska
   5. https://www.oswego.edu/physics/
   6. https://apod.nasa.gov/apod/ap230711.html
   7. https://soho.nascom.nasa.gov/data/realtime-images.html
   8. https://en.wikipedia.org/wiki/Electron
   9. https://en.wikipedia.org/wiki/Proton
  10. https://solarsystem.nasa.gov/resources/2288/the-solar-wind-across-our-solar-system/
  11. https://www.nasa.gov/mission_pages/sunearth/multimedia/magnetosphere.html
  12. https://spaceplace.nasa.gov/atmosphere/en/
  13. https://apod.nasa.gov/apod/ap230704.html
  14. https://www.theaurorazone.com/about-the-aurora/the-science-of-the-northern-lights/the-northern-lights-colours
  15. https://en.wikipedia.org/wiki/Geological_history_of_Earth
  16. https://apod.nasa.gov/apod/ap210303.html
  17. https://youtu.be/DQx96G4yHd8
  18. https://en.wikipedia.org/wiki/Iceland
  19. https://en.wikipedia.org/wiki/Geology_of_Reykjanes_Peninsula
  20. https://guidetoiceland.is/travel-iceland/drive/svartsengi
  21. https://www.insider.com/icelands-blue-lagoon-man-made-2017-11
  22. https://www.instagram.com/p/CukPkBPo5b3/
  23. https://as2.ftcdn.net/v2/jpg/01/89/49/89/1000_F_189498933_OeutsN0mMlzJGaJZJvkXIsoSCUCFIO7W.jpg
  24. https://apod.nasa.gov/apod/ap230814.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. https://asterisk.apod.com/discuss_apod.php?date=230815
  34. https://apod.nasa.gov/apod/ap230816.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. https://science.nasa.gov/learners
  45. http://www.mtu.edu/