Planets transit stars all the time, yeah yeah that's old news. So what about black holes?! We've never detected a black hole transiting a star but it would create some pretty weird effects, as we get into in this week's Cool Worlds episode. Feel free to ask questions below! ::More about this Video:: ► Kruse & Agol (2014), "KOI-3278: A Self-Lensing Binary Star System": https://arxiv.org/abs/1404.4379 ► Maeder (1973), "Light Curves of the Gravitational Lens-like Action for Binaries with Degenerate Stars": http://adsabs.harvard.edu/abs/1973A%26A....26..215M ► Cool Worlds - Live Q&A on Tabby's Star with Tabby Boyajian: https://youtu.be/k_-6SEb2QlM ► Cool Worlds - A Theory for Tabby's Star: https://youtu.be/risNfZxz6DQ ► Cool Worlds - Eyeball Earths: https://youtu.be/85zbpJXSTn0 ► Cool Worlds - The Great American Eclipse 2017: https://youtu.be/9Vi35gVCz2Y ► Cool Worlds - A Cloaking Device for Transiting Planets: https://youtu.be/z1Pqqf_6J9w ► Cool Worlds Lab website: http://coolworlds.astro.columbia.edu ► Columbia University Department of Astronomy: http://www.astro.columbia.edu ► Outro music by melodysheep "Monsters of the Cosmos": https://www.youtube.com/watch?v=7e5-0t0pTF0 ::Playlists For Channel:: Latest Cool Worlds Videos ► http://bit.ly/NewCoolWorlds Cool Worlds Research ► http://bit.ly/CoolWorldsResearch Guest Videos ► http://bit.ly/CoolWorldsGuests Q&A Videos ► http://bit.ly/CoolWorldsQA Tabby's Star ► http://bit.ly/TabbysStar Science of TV/Film ► http://bit.ly/ScienceMovies ::Follow us:: SUBSCRIBE to the channel http://bit.ly/CoolWorldsSubscribe Cool Worlds Lab http://coolworlds.astro.columbia.edu Twitter https://twitter.com/david_kipping Instagram https://www.instagram.com/cool.worlds THANKS FOR WATCHING!!