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.

                              2025 November 18
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                  The Galactic Plane: Radio Versus Visible
    Image Credit: Radio: [2]S. Mantovanini & the [3]GLEAM team; Visible:
                   [4]Axel Mellinger ([5]milkywaysky.com)

   Explanation: What does the Milky Way look like in radio waves? To
   better find out, [6]GLEAM surveyed the [7]central band of our galaxy in
   high resolution radio light as imaged by the [8]Murchison Widefield
   Array in [9]Australia. As the [10]featured video slowly scrolls, radio
   light (71 - 231 MHz) is seen on the left and visible light -- from the
   same field -- on the right. [11]Differences are so great because most
   objects glow differently in [12]radio and [13]visible light, and
   because visible light is stopped by nearby interstellar dust. These
   differences are [14]particularly apparent in the direction [15]toward
   the [16]center of our galaxy, seen about a third of the way through.
   Among the many [17]features that appear in the radio, bright red
   patches are usually [18]supernova remnants of exploded stars, while
   areas colored blue are [19]stellar nurseries filled with bright young
   stars.

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                        Tomorrow's picture: the big V
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    Authors & editors: [32]Robert Nemiroff ([33]MTU) & [34]Jerry Bonnell
                                 ([35]UMCP)
          NASA Official: Amber Straughn [36]Specific rights apply.
            [37]NASA Web Privacy, [38]Accessibility, [39]Notices;
                A service of: [40]ASD at [41]NASA / [42]GSFC,
                         [43]NASA Science Activation
                           & [44]Michigan Tech. U.

References

   1. https://apod.nasa.gov/apod/archivepix.html
   2. https://www.researchgate.net/profile/Silvia_Mantovanini
   3. https://www.mwatelescope.org/science/galactic-science/gleam/
   4. https://milkywaysky.com/contact.html
   5. https://milkywaysky.com/
   6. https://www.mwatelescope.org/science/galactic-science/gleam/
   7. https://apod.nasa.gov/apod/ap250209.html
   8. https://www.mwatelescope.org/
   9. https://en.wikipedia.org/wiki/Australia
  10. https://www.icrar.org/gleam-x-galactic-plane/
  11. https://www.reddit.com/r/cats/comments/pd6d24/good_people_of_reddit_help_us_name_this_duo/#lightbox
  12. https://science.nasa.gov/ems/05_radiowaves/
  13. https://science.nasa.gov/ems/09_visiblelight/
  14. https://apod.nasa.gov/apod/ap250414.html
  15. https://apod.nasa.gov/apod/ap100831.html
  16. https://apod.nasa.gov/apod/ap241124.html
  17. https://www.curtin.edu.au/news/media-release/a-new-expansive-view-of-the-milky-way-reveals-our-galaxy-in-unprecedented-radio-colour/
  18. https://en.wikipedia.org/wiki/Supernova_remnant
  19. https://apod.nasa.gov/apod/ap250708.html
  20. https://apod.nasa.gov/apod/lib/about_apod.html
  21. https://apod.nasa.gov/apod/ap251117.html
  22. https://apod.nasa.gov/apod/archivepix.html
  23. https://apod.nasa.gov/apod/lib/apsubmit2015.html
  24. https://apod.nasa.gov/apod/lib/aptree.html
  25. https://antwrp.gsfc.nasa.gov/cgi-bin/apod/apod_search
  26. https://apod.nasa.gov/apod/calendar/allyears.html
  27. https://apod.com/feed.rss
  28. https://apod.nasa.gov/apod/lib/edlinks.html
  29. https://apod.nasa.gov/apod/lib/about_apod.html
  30. https://asterisk.apod.com/discuss_apod.php?date=251118
  31. https://apod.nasa.gov/apod/ap251119.html
  32. http://www.phy.mtu.edu/faculty/Nemiroff.html
  33. http://www.phy.mtu.edu/
  34. https://antwrp.gsfc.nasa.gov/htmltest/jbonnell/www/bonnell.html
  35. http://www.astro.umd.edu/
  36. https://apod.nasa.gov/apod/lib/about_apod.html#srapply
  37. https://www.nasa.gov/about/highlights/HP_Privacy.html
  38. https://www.nasa.gov/general/accessibility/
  39. https://www.nasa.gov/privacy/
  40. https://astrophysics.gsfc.nasa.gov/
  41. https://www.nasa.gov/
  42. https://www.nasa.gov/centers/goddard/
  43. https://science.nasa.gov/learners
  44. http://www.mtu.edu/