Nasa's new discovery - the largest black hole in history, Largest black hole in history - beyond space and science - do.entary channel a black hole is a mathematically specified region of spacetime showing such. Discovery channel formula one the limit - you., This feature is not available right now. please try again later.. List of do.entary television channels - wikipedia, This is a list of do.entary channels, including channels that have been affected by "channel drift". it also contains channels accused of a biased point of view..