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About this Youtube video: You can learn more at SUBSCRIBE so you don t miss a video More info and sources below The edge of everything used to be the edge of the map. But now thanks to what we know about astrophysics and the universe the edge of everything might not even exist REFERENCES ----------- FOLLOW US Twitter DrJoeHanson okaytobesmart Instagram DrJoeHanson Merch Facebook SEND US STUFF It s Okay To Be Smart PO Box 303356 Austin TX 78703 USA BOOKS WE VE FEATURED ----------- It s Okay To Be Smart is hosted by Joe Hanson Ph.D. Director Joe Nicolosi Writer Mara Johnson-Groh Creative Director David Schulte Editor animator Derek Borsheim Producers Stephanie Noone and Amanda Fox Produced by PBS Digital Studios Music via APM Stock images from Shutterstock .