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 October 1

         IFRAME: [2]https://www.youtube.com/embed/ExGvwNuKyMc?ref=0

                Porphyrion: The Longest Known Black Hole Jets
   Animation Credit: [3]Science Communication Lab for [4]Martijn Oei [5]et
                               al., [6]Caltech

   Explanation: How far can black hole jets extend? A [7]new record was
   found just recently with the discovery of a 23-million [8]light-year
   long jet pair from a black hole active billions of years ago. Dubbed
   [9]Porphyrion for a mythological Greek giant, the impressive jets were
   created by a type of [10]black hole that does not usually create long
   jets -- one that is busy creating radiation from infalling gas. The
   [11]featured animated video depicts what it might look like to circle
   around this powerful [12]black hole system. [13]Porphyrion is shown as
   a fast stream of [14]energetic particles, and the bright areas are
   where these particles are impacting surrounding gas. The discovery was
   made using data from the [15]Keck and [16]Mayall ([17]DESI) optical
   observatories as well as [18]LOFAR and the [19]Giant Metrewave Radio
   Telescope. The existence of [20]these jets demonstrates that black
   holes can affect not only their [21]home galaxies but [22]far out into
   the surrounding [23]universe.

   Your Sky Surprise: [24]What picture did APOD feature on your birthday?
                                 (post 1995)
                     Tomorrow's picture: big star cloud
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    Authors & editors: [36]Robert Nemiroff ([37]MTU) & [38]Jerry Bonnell
                                 ([39]UMCP)
          NASA Official: Amber Straughn [40]Specific rights apply.
            [41]NASA Web Privacy, [42]Accessibility, [43]Notices;
                A service of: [44]ASD at [45]NASA / [46]GSFC,
                         [47]NASA Science Activation
                           & [48]Michigan Tech. U.

References

   1. https://apod.nasa.gov/apod/archivepix.html
   2. https://www.youtube.com/embed/ExGvwNuKyMc?ref=0
   3. https://scicom-lab.com/
   4. https://pma.caltech.edu/people/martijn-oei
   5. https://ui.adsabs.harvard.edu/abs/2024Natur.633..537O/abstract
   6. https://www.astro.caltech.edu/
   7. https://www.keckobservatory.org/porphyrion/
   8. https://science.nasa.gov/exoplanets/what-is-a-light-year/
   9. https://en.wikipedia.org/wiki/Porphyrion
  10. https://apod.nasa.gov/apod/ap240507.html
  11. https://youtu.be/VYjCQ--wEVk
  12. https://science.nasa.gov/universe/black-holes/
  13. https://www.nytimes.com/2024/09/25/science/space/black-hole-m87-energy.html
  14. https://www.iar.unlp.edu.ar/biblio/htdocs/artic/contri/1610.pdf
  15. https://www.keckobservatory.org/
  16. https://noirlab.edu/public/programs/kitt-peak-national-observatory/nicholas-mayall-4m-telescope/
  17. https://www.desi.lbl.gov/DESI
  18. https://www.mpifr-bonn.mpg.de/en/lofar
  19. http://www.ncra.tifr.res.in/ncra/gmrt
  20. https://www.cnn.com/2024/09/24/science/massive-black-hole-jets-porphyrion/index.html
  21. https://apod.nasa.gov/apod/ap030501.html
  22. https://wallpapers.com/images/featured/galaxy-cat-kyz6xesjaq5wq8y2.jpg
  23. https://science.nasa.gov/exoplanets/what-is-the-universe/
  24. https://apod.nasa.gov/apod/calendar/allyears.html
  25. https://apod.nasa.gov/apod/ap240930.html
  26. https://apod.nasa.gov/apod/archivepix.html
  27. https://apod.nasa.gov/apod/lib/apsubmit2015.html
  28. https://apod.nasa.gov/apod/lib/aptree.html
  29. https://antwrp.gsfc.nasa.gov/cgi-bin/apod/apod_search
  30. https://apod.nasa.gov/apod/calendar/allyears.html
  31. https://apod.com/feed.rss
  32. https://apod.nasa.gov/apod/lib/edlinks.html
  33. https://apod.nasa.gov/apod/lib/about_apod.html
  34. https://asterisk.apod.com/discuss_apod.php?date=241001
  35. https://apod.nasa.gov/apod/ap241002.html
  36. http://www.phy.mtu.edu/faculty/Nemiroff.html
  37. http://www.phy.mtu.edu/
  38. https://antwrp.gsfc.nasa.gov/htmltest/jbonnell/www/bonnell.html
  39. http://www.astro.umd.edu/
  40. https://apod.nasa.gov/apod/lib/about_apod.html#srapply
  41. https://www.nasa.gov/about/highlights/HP_Privacy.html
  42. https://www.nasa.gov/general/accessibility/
  43. https://www.nasa.gov/privacy/
  44. https://astrophysics.gsfc.nasa.gov/
  45. https://www.nasa.gov/
  46. https://www.nasa.gov/centers/goddard/
  47. https://science.nasa.gov/learners
  48. http://www.mtu.edu/