AaS! 137: What's really at the center of a black hole?

What can possibly replace the singularity? What are Planck stars and Gravastars? What's it like to fall into a rotating black hole? I discuss these questions and more in today's Ask a Spaceman! Support the show: http://www.patreon.com/pmsutter All episodes: http://www.AskASpaceman.com Watch on YouTube: http://www.youtube.com/PaulMSutter Read a book: https://www.pmsutter.com/books  Keep those questions about space, science, astronomy, astrophysics, physics, and cosmology coming to #AskASpaceman for COMPLETE KNOWLEDGE OF TIME AND SPACE! Big thanks to my top Patreon supporters this month: Matthew K, Justin Z, Justin G, Kevin O, Duncan M, Corey D, Barbara K, Neuterdude, Chris C, Robert M, Nate H, Andrew F, Chris L, Cameron L, Naila, Aaron S, Kirk T, Tom B, Scott M, Billy T, Rob H, Tim R, Joe R, Neil P, Bryan D, Irene P, Matt C, Iothian53, Steve P, Debra S, Ken L, Alberto M, Ron W, Chris L, Mark R, Alan B, Stephen J, David P, John F, Maureen R, Frank T, Craig B, Jesse A, Steven L, Ulfert B, Dave L, Stace J, S Stark, Richard K, Carol S, Stephen M, Grace M, Jeremy K, Russell W, David B, Tamara F, Robert B, Fr Bruce W, Catherine R, Nicolai B, Sean M, Nate H, Edward K, Ped, Chuck C, Stephen S, Elizabeth W, Eric F, Tracy F, Callan R, George, Tom G, Michael H, Tom, Sarah K, Jens O, Ella F, Sarah K, JJ_Holy, G Clune, Ryan L, Cindy R, Judy D, Sam R, Tom Van S, Thomas K, James C, Jorg D, Nicole M, Syamkumar M, John S, db8y97, Fred S, COTFM, Darren W, Vladimir Z, Norm Z, Howard, Homer V, Kevin P, Robert H, Mark D, Ron S, David W, Antonio M, Brianna V, Becky L, Bruce A, Kia K, Arthur, Bill H, Justin W, Dave D, Colin B, David L, Steven M, Richard S, Brent B, Bill E, Rick W, and Jim L! Music by Jason Grady and Nick Bain. Thanks to Cathy Rinella for editing. Hosted by Paul M. Sutter, astrophysicist and the one and only Agent to the Stars (http://www.pmsutter.com).