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 July 17

         IFRAME: [2]https://www.youtube.com/embed/aX4ozspTPQY?rel=0

                     Villarrica Volcano Against the Sky
        Video Credit & Copyright: [3]Gabriel Muñoz; Text: [4]Natalia
                        Lewandowska ([5]SUNY Oswego)

   Explanation: When [6]Vulcan, the [7]Roman god of fire, swings his
   blacksmith's hammer, the sky is lit on [8]fire. A recent eruption of
   [9]Chile's [10]Villarrica volcano shows the delicate interplay between
   this fire -- actually glowing steam and [11]ash from [12]melted rock --
   and the light from distant stars in our [13]Milky Way galaxy and the
   [14]Magellanic Clouds galaxies. In the featured timelapse video, the
   [15]Earth rotates under the stars as [16]Villarrica erupts. With about
   [17]1350 volcanoes, our [18]planet Earth rivals [19]Jupiter's moon Io
   as the most [20]geologically active place in the [21]Solar System.
   While both have magnificent beauty, the reasons for the existence of
   volcanoes on both worlds are different. Earth's volcanoes typically
   occur between slowly shifting [22]outer shell plates, while [23]Io's
   volcanoes are caused by [24]gravitational flexing resulting from
   [25]Jupiter's tidal gravitational [26]pull.

                       Tomorrow's picture: open space
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    Authors & editors: [38]Robert Nemiroff ([39]MTU) & [40]Jerry Bonnell
                                 ([41]UMCP)
          NASA Official: Amber Straughn [42]Specific rights apply.
            [43]NASA Web Privacy, [44]Accessibility, [45]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://www.youtube.com/embed/aX4ozspTPQY?rel=0
   3. mailto: gbelmm at gmail.com
   4. https://ww1.oswego.edu/physics/profile/natalia-lewandowska
   5. https://www.oswego.edu/physics/
   6. https://mythopedia.com/topics/vulcan
   7. https://en.wikipedia.org/wiki/Roman_mythology
   8. https://youtu.be/Q2FzZSBD5LE?t=95
   9. https://en.wikipedia.org/wiki/Chile
  10. https://en.wikipedia.org/wiki/Villarrica_(volcano)
  11. https://apod.nasa.gov/apod/ap190512.html
  12. https://apod.nasa.gov/apod/ap120402.html
  13. https://science.nasa.gov/resource/the-milky-way-galaxy/
  14. https://apod.nasa.gov/apod/ap230211.html
  15. https://apod.nasa.gov/apod/ap200701.html
  16. https://youtu.be/mDJGA-YiY14
  17. https://en.wikipedia.org/wiki/Active_volcano
  18. https://science.nasa.gov/earth/facts/
  19. https://www.space.com/jupiter-moon-io-volcanoes-map
  20. https://www.jpl.nasa.gov/images/pia25888-io-in-color-and-infrared
  21. https://science.nasa.gov/solar-system/solar-system-facts/
  22. https://www.nps.gov/subjects/volcanoes/plate-tectonics-and-volcanoes.htm
  23. https://science.nasa.gov/jupiter/moons/io/
  24. https://en.wikipedia.org/wiki/Tidal_heating
  25. https://apod.nasa.gov/apod/ap170523.html
  26. https://encrypted-tbn0.gstatic.com/images?q=tbn:ANd9GcQRKoaqHZb45w9bZmBUWhx16kYBu5JmsPTIVw&s
  27. https://apod.nasa.gov/apod/ap240716.html
  28. https://apod.nasa.gov/apod/archivepix.html
  29. https://apod.nasa.gov/apod/lib/apsubmit2015.html
  30. https://apod.nasa.gov/apod/lib/aptree.html
  31. https://antwrp.gsfc.nasa.gov/cgi-bin/apod/apod_search
  32. https://apod.nasa.gov/apod/calendar/allyears.html
  33. https://apod.com/feed.rss
  34. https://apod.nasa.gov/apod/lib/edlinks.html
  35. https://apod.nasa.gov/apod/lib/about_apod.html
  36. https://asterisk.apod.com/discuss_apod.php?date=240717
  37. https://apod.nasa.gov/apod/ap240718.html
  38. http://www.phy.mtu.edu/faculty/Nemiroff.html
  39. http://www.phy.mtu.edu/
  40. https://antwrp.gsfc.nasa.gov/htmltest/jbonnell/www/bonnell.html
  41. http://www.astro.umd.edu/
  42. https://apod.nasa.gov/apod/lib/about_apod.html#srapply
  43. https://www.nasa.gov/about/highlights/HP_Privacy.html
  44. https://www.nasa.gov/general/accessibility/
  45. https://www.nasa.gov/privacy/
  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/