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 __________________________________________________________________ [20]< | [21]Archive | [22]Submissions | [23]Index | [24]Search | [25]Calendar | [26]RSS | [27]Education | [28]About APOD | [29]Discuss | [30]> __________________________________________________________________ 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/