Viewers like you help make PBS (Thank you 😃) . Support your local PBS Member Station here: https://to.pbs.org/DonateSPACE What really happens when you approach the event horizon of a black hole? What do you see when you actually cross it? Matt shows you an elegant tool for understanding this mysterious region of spacetime. This episode is supported by The Great Courses Plus. Go to http://ow.ly/WPIo306GotR for your one month free trial! Help support Space Time on Patreon! https://www.patreon.com/pbsspacetime Get your own Space Time t­shirt at http://bit.ly/1QlzoBi Tweet at us! @pbsspacetime Facebook: facebook.com/pbsspacetime Email us! pbsspacetime [at] gmail [dot] com Comment on Reddit: http://www.reddit.com/r/pbsspacetime CUNY Physics (stay tuned for event April 7 event details): http://www.gc.cuny.edu/Page-Elements/Academics-Research-Centers-Initiatives/Doctoral-Programs/Physics Help tranlate our videos! null Written and hosted by Matt O’Dowd Produced by Rusty Ward Graphics by Grayson Blackmon Made by Kornhaber Brown (www.kornhaberbrown.com) Comments Answered by Matt: dinosaurfromfuture https://www.youtube.com/watch?v=RlXdsyctD50 vacuum diagram https://www.youtube.com/watch?v=RlXdsyctD50 Special thanks to our Patreon Big Bang, Hypernova and Quasar Supporters: Antonio Park Joel Brinton Luna IT Solutions Clock Watcher Joe Ratfeast Vitaly Kovalenko John Hofmann Thanks to our Patreon Gamma Ray Burst Supporters: Jade Bilkey Kevin Warne JJ Bagnell J Rejc Bernardo Higuera Michael Fischer Dylan Merida Colette Weeks Amy Jie Anthony Caridi Avi Goldfinger Corey Smeaton John Pettit Shannan Catalano Florian Stinglmayr Yubo Du Benoit Pagé-Guitard Ronny Polonia Nathan Leniz Jessica Fraley Kirk Mathews Loro Lukic Carl P. Corliss Brandon labonte David Crane Greg Weiss David Matteson Marc Lagarde Eric Jackson Will and Sonja Marple