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 Your browser does not support the video tag. 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. Did you know: [20]APOD is available from numerous sites, including social media? Tomorrow's picture: the big V __________________________________________________________________ [21]< | [22]Archive | [23]Submissions | [24]Index | [25]Search | [26]Calendar | [27]RSS | [28]Education | [29]About APOD | [30]Discuss | [31]> __________________________________________________________________ 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/