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.

                               2019 October 1

            IFRAME: [2]https://www.youtube.com/embed/aMTwtb3TVIk

                           Black Hole Safety Video
    Video Credit: [3]NASA's [4]GSFC, [5]SVS; Music: Prim and Proper from
                        [6]Universal Production Music

   Explanation: If you were a small one-eyed monster, would you want to
   visit a black hole? Well the one in [7]this video does -- but should
   it? No, actually, but since our little friend is insistent on going,
   [8]the video informs it what black holes really are, and how to be as
   safe as possible when visiting. [9]Black holes are clumps of matter so
   dense that light cannot escape. [10]Pairs of black holes, each several
   times the mass of our [11]Sun, have recently been [12]found to merge by
   detection of unusual [13]gravitational radiation. The [14]regions
   surrounding [15]supermassive black holes in the centers of galaxies can
   light up as stars that near them get [16]shredded. The [17]closest
   known black hole to the Earth is [18]V616 Mon, which is about 3,300
   light years away. The best way for our monster friend to [19]stay safe,
   the video informs, is to not go too close.

                 Tomorrow's picture: found floating in space
     __________________________________________________________________

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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/aMTwtb3TVIk
   3. https://www.nasa.gov/
   4. https://www.nasa.gov/goddard
   5. https://svs.gsfc.nasa.gov/
   6. https://www.universalproductionmusic.com/
   7. https://svs.gsfc.nasa.gov/13322
   8. https://youtu.be/aMTwtb3TVIk
   9. https://science.nasa.gov/astrophysics/focus-areas/black-holes
  10. https://apod.nasa.gov/apod/ap190414.html
  11. https://solarsystem.nasa.gov/solar-system/sun/overview/
  12. https://en.wikipedia.org/wiki/List_of_gravitational_wave_observations
  13. https://www.ligo.caltech.edu/page/what-are-gw
  14. https://apod.nasa.gov/apod/ap190820.html
  15. https://apod.nasa.gov/apod/ap181203.html
  16. https://apod.nasa.gov/apod/ap151028.html
  17. https://en.wikipedia.org/wiki/List_of_nearest_black_holes
  18. https://en.wikipedia.org/wiki/A0620-00
  19. http://s8.favim.com/orig/72/animals-cat-cats-hiding-Favim.com-673698.jpg
  20. https://apod.nasa.gov/apod/ap190930.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=191001
  30. https://apod.nasa.gov/apod/ap191002.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/