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.

                              2026 September 24
    [2]See Explanation. Clicking on the picture will download the highest
                        resolution version available.

                        The Ghosts of Five Supernovas
        Image Credit & Copyright: [3]Stephane Vetter, [4]Yann Sainty
     Text: [5]Cecilia Chirenti ([6]NASA [7]GSFC, [8]UMCP, [9]CRESST II)

   Explanation: The ghosts of five supernovas haunt this extraordinary
   [10]image. It was acquired at [11]Oukaïmeden Observatory in [12]Morocco
   with approximately 200 hours of observations and shows a large patch of
   the sky, equivalent to the [13]area of one thousand full moons tiled
   together, in the constellation of [14]Auriga (the [15]charioteer). From
   left to right, the five supernova remnants visible across the field are
   [16]G181.1+9.5, [17]G182.4+4.3, [18]G179.0+2.6, [19]G180.0−1.7
   (Sh2-240, the [20]Spaghetti Nebula), and [21]G178.2−4.2. They are
   highlighted in the [22]annotated image, together with [23]open cluster
   [24]M37 and the [25]Tadpole Nebula. As each explosion [26]expanded into
   space, it created a growing shell of shocked gas and delicate
   filamentary structures shown in red ([27]hydrogen) and blue
   ([28]oxygen), respectively. These ancient stellar explosions happened
   independently; they are at various distances up to about several
   thousands of [29]light-years away from Earth and have estimated ages up
   to [30]tens of thousands of years old. Early humans may have
   [31]witnessed them as bright new stars, fading over weeks or months.

    APOD's email for image submissions has changed. Please see: [32]APOD
                                Submissions.
       APOD's main NASA site is [33]moving : From [34]apod.nasa.gov to
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                      Tomorrow's picture: what's next?
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    Authors & editors: [47]Robert Nemiroff ([48]MTU) & [49]Jerry Bonnell
                                 ([50]UMCP)
          NASA Official: Amber Straughn [51]Specific rights apply.
            [52]NASA Web Privacy, [53]Accessibility, [54]Notices;
                A service of: [55]ASD at [56]NASA / [57]GSFC,
                         [58]NASA Science Activation
                           & [59]Michigan Tech. U.

References

   1. https://apod.nasa.gov/apod/archivepix.html
   2. https://apod.nasa.gov/apod/image/2609/5SNR_Auriga_2000.jpg
   3. https://app.astrobin.com/u/Sacrednight
   4. https://app.astrobin.com/u/yann_sainty
   5. https://science.gsfc.nasa.gov/sci/bio/cecilia.chirenti
   6. https://www.nasa.gov/
   7. https://www.nasa.gov/goddard/
   8. https://www.astro.umd.edu/people/cecilia-chirenti
   9. https://cresst2.umd.edu/
  10. https://app.astrobin.com/i/jvnafq?r=D
  11. https://www.planetary.org/space-images/morocco-oukameden-sky-survey
  12. https://science.nasa.gov/earth/earth-observatory/wet-and-dry-morocco-144677/
  13. https://lco.global/spacebook/sky/using-angles-describe-positions-and-apparent-sizes-objects/
  14. https://noirlab.edu/public/education/constellations/auriga/
  15. https://images.unsplash.com/photo-1706793987472-2e3b3ec44fcc
  16. https://www.aanda.org/articles/aa/full_html/2017/01/aa29848-16
  17. https://articles.adsabs.harvard.edu/pdf/1998A&A...331..661K
  18. https://ui.adsabs.harvard.edu/link_gateway/2018MNRAS.478.1987H/PUB_HTML
  19. https://academic.oup.com/mnras/article/448/4/3196/955844
  20. https://apod.nasa.gov/apod/ap240227.html
  21. https://www.aanda.org/articles/aa/full_html/2011/08/aa17179-11/aa17179-11.html
  22. https://apod.nasa.gov/apod/image/2609/5SNR_Auriga_annotated_1000.jpg
  23. https://apod.nasa.gov/apod/ap250227.html
  24. https://apod.nasa.gov/apod/ap100305.html
  25. https://apod.nasa.gov/apod/ap260317.html
  26. https://apod.nasa.gov/apod/ap250108.html
  27. https://apod.nasa.gov/apod/ap050930.html
  28. https://en.wikipedia.org/wiki/Doubly_ionized_oxygen
  29. https://science.nasa.gov/exoplanets/what-is-a-light-year/
  30. https://apod.nasa.gov/apod/ap260107.html
  31. https://www.ed.ac.uk/research-innovation/latest-research-news/cave-paintings-reveal-use-of-complex-astronomy
  32. https://apod.nasa.gov/apod/lib/apsubmit2015.html
  33. https://asterisk.apod.com/viewtopic.php?t=45023
  34. https://apod.nasa.gov/
  35. https://science.nasa.gov/apod
  36. https://apod.nasa.gov/apod/ap260923.html
  37. https://apod.nasa.gov/apod/archivepix.html
  38. https://apod.nasa.gov/apod/lib/apsubmit2015.html
  39. https://apod.nasa.gov/apod/lib/aptree.html
  40. https://antwrp.gsfc.nasa.gov/cgi-bin/apod/apod_search
  41. https://apod.nasa.gov/apod/calendar/allyears.html
  42. https://apod.com/feed.rss
  43. https://apod.nasa.gov/apod/lib/edlinks.html
  44. https://apod.nasa.gov/apod/lib/about_apod.html
  45. https://asterisk.apod.com/discuss_apod.php?date=260924
  46. https://apod.nasa.gov/apod/ap260925.html
  47. https://www.mtu.edu/physics/department/faculty/nemiroff/
  48. https://www.mtu.edu/physics/
  49. https://inspirehep.net/authors/1073087
  50. http://www.astro.umd.edu/
  51. https://apod.nasa.gov/apod/lib/about_apod.html#srapply
  52. https://www.nasa.gov/about/highlights/HP_Privacy.html
  53. https://www.nasa.gov/general/accessibility/
  54. https://www.nasa.gov/privacy/
  55. https://science.gsfc.nasa.gov/astrophysics/
  56. https://www.nasa.gov/
  57. https://www.nasa.gov/centers/goddard/
  58. https://science.nasa.gov/learn/about-science-activation/
  59. http://www.mtu.edu/