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 6
    [2]A thick transparent ribbon of red gas runs from the lower left to
   the upper right. A dark starfield with stars and galaxies surrounds the
       bright red ribbon. Please see the explanation for more detailed
                                information.

                   SN 1006: A Supernova Ribbon from Hubble
       Credit: [3]NASA, [4]ESA, [5]Hubble Heritage ([6]STScI/[7]AURA);
                Acknowledgement: [8]W. Blair et al. ([9]JHU)

   Explanation: What created this unusual space ribbon? The answer: one of
   the most [10]violent explosions ever [11]witnessed by ancient humans.
   Back in the year 1006 AD, light reached Earth from a [12]stellar
   explosion in the constellation of the Wolf ([13]Lupus), creating a
   "guest star" in the sky that appeared brighter than [14]Venus and
   lasted for over two years. The supernova, now cataloged at [15]SN 1006,
   occurred about 7,000 light years away and has left a large remnant that
   [16]continues to expand and fade today. [17]Pictured here is a small
   part of that [18]expanding supernova [19]remnant dominated by a
   [20]thin and outwardly moving [21]shock front that heats and ionizes
   surrounding ambient gas. The [22]supernova remnant SN 1006 now has a
   diameter of nearly 60 [23]light years.

                      Tomorrow's picture: pelican stars
     __________________________________________________________________

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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/SN1006_Hubble_4940.jpg
   3. https://www.nasa.gov/
   4. https://www.esa.int/
   5. https://hubblesite.org/images/hubble-heritage
   6. https://www.stsci.edu/
   7. https://www.aura-astronomy.org/
   8. https://physics-astronomy.jhu.edu/directory/william-blair/
   9. https://physics-astronomy.jhu.edu/
  10. https://en.wikipedia.org/wiki/Supernova
  11. https://www.sadanduseless.com/wp-content/uploads/2018/11/funny-suprised-cat2.jpg
  12. https://youtu.be/BukKR_41r9g
  13. https://en.wikipedia.org/wiki/Lupus_(constellation)
  14. https://apod.nasa.gov/apod/ap230306.html
  15. https://en.wikipedia.org/wiki/SN_1006
  16. https://en.wikipedia.org/wiki/SN_1006#/media/File:SN_1006_Remnant_Expansion_Comparison.jpeg
  17. https://hubblesite.org/contents/media/images/2008/22/2351-Image.html
  18. https://apod.nasa.gov/apod/ap140712.html
  19. https://hubblesite.org/contents/news-releases/2008/news-2008-22.html
  20. https://apod.nasa.gov/apod/ap030317.html
  21. https://apod.nasa.gov/apod/ap220522.html
  22. https://youtu.be/hAMIqzvpZDc
  23. https://spaceplace.nasa.gov/light-year/en/
  24. https://apod.nasa.gov/apod/ap230805.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=230806
  34. https://apod.nasa.gov/apod/ap230807.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/