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                        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.

                                2021 April 27

         IFRAME: [2]https://www.youtube.com/embed/ubBzcSD8G8k?rel=0

                     Animation: Black Hole Destroys Star
      Video Illustration Credit: [3]DESY, [4]Science Communication Lab

   Explanation: What happens if a star gets too close to a black hole? The
   [5]black hole can rip it apart -- but how? It's not the high
   gravitational attraction itself that's the problem -- it's the
   [6]difference in gravitational pull across the star that creates the
   destruction. In the [7]featured animated video illustrating this
   disintegration, you first see a star approaching the black hole.
   Increasing in orbital speed, the [8]star's outer atmosphere is ripped
   away during closest approach. Much of the star's atmosphere disperses
   into deep space, but some continues to orbit the black hole and forms
   an [9]accretion disk. The [10]animation then takes you into the
   accretion disk while looking toward the black hole. Including the
   [11]strange visual effects of [12]gravitational lensing, you can even
   [13]see the far side of the disk. Finally, you [14]look along one of
   the [15]jets being expelled along the spin axis. Theoretical [16]models
   indicate that these jets not only expel energetic gas, but create
   energetic [17]neutrinos -- one of which may have been [18]seen recently
   on [19]Earth.

                   Tomorrow's picture: polaris deep field
     __________________________________________________________________

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     __________________________________________________________________

    Authors & editors: [31]Robert Nemiroff ([32]MTU) & [33]Jerry Bonnell
                                 ([34]UMCP)
          NASA Official: Phillip Newman [35]Specific rights apply.
              [36]NASA Web Privacy Policy and Important Notices
                A service of: [37]ASD at [38]NASA / [39]GSFC
                           & [40]Michigan Tech. U.

References

   1. https://apod.nasa.gov/apod/archivepix.html
   2. https://www.youtube.com/embed/ubBzcSD8G8k?rel=0
   3. https://www.desy.de/
   4. https://www.scicom-lab.com/
   5. https://science.nasa.gov/astrophysics/focus-areas/black-holes
   6. http://burro.astr.cwru.edu/Academics/Astr221/Gravity/tides.html
   7. https://www.desy.de/news/news_search/index_eng.html?openDirectAnchor=2030
   8. https://en.wikipedia.org/wiki/Stellar_atmosphere
   9. https://apod.nasa.gov/apod/ap170327.html
  10. https://youtu.be/ubBzcSD8G8k
  11. https://www.phy.mtu.edu/bht/rjn_bht.html
  12. https://en.wikipedia.org/wiki/Gravitational_lens
  13. https://apod.nasa.gov/apod/ap200825.html
  14. https://www.vetbabble.com/wp-content/uploads/2017/10/cat-looking-up-banner1.png
  15. https://apod.nasa.gov/apod/ap210415.html
  16. https://ui.adsabs.harvard.edu/abs/2021NatAs.tmp...49W/abstract
  17. https://nasa.tumblr.com/post/643837966463188992/youre-always-surrounded-by-neutrinos
  18. https://www.newscientist.com/article/2268724-weve-spotted-a-neutrino-blasted-out-by-a-black-hole-shredding-a-star/
  19. https://earthobservatory.nasa.gov/topic/image-of-the-day
  20. https://apod.nasa.gov/apod/ap210426.html
  21. https://apod.nasa.gov/apod/archivepix.html
  22. https://apod.nasa.gov/apod/lib/apsubmit2015.html
  23. https://apod.nasa.gov/apod/lib/aptree.html
  24. https://antwrp.gsfc.nasa.gov/cgi-bin/apod/apod_search
  25. https://apod.nasa.gov/apod/calendar/allyears.html
  26. https://apod.nasa.gov/apod.rss
  27. https://apod.nasa.gov/apod/lib/edlinks.html
  28. https://apod.nasa.gov/apod/lib/about_apod.html
  29. http://asterisk.apod.com/discuss_apod.php?date=210427
  30. https://apod.nasa.gov/apod/ap210428.html
  31. http://www.phy.mtu.edu/faculty/Nemiroff.html
  32. http://www.phy.mtu.edu/
  33. https://antwrp.gsfc.nasa.gov/htmltest/jbonnell/www/bonnell.html
  34. http://www.astro.umd.edu/
  35. https://apod.nasa.gov/apod/lib/about_apod.html#srapply
  36. https://www.nasa.gov/about/highlights/HP_Privacy.html
  37. https://astrophysics.gsfc.nasa.gov/
  38. https://www.nasa.gov/
  39. https://www.nasa.gov/centers/goddard/
  40. http://www.mtu.edu/