Season 4 Episodes8
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Ranked #1 of 8 in Season 4•+0.2 vs season avg
A look inside the supermassive black hole in the center of the Milky Way to discover terrifying secrets about parallel universes, wormholes, and space-time.
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"Monster Black Hole" is episode 3 of How the Universe Works season 4. It scored 8.7/10 from 113 votes, ranking #1 of 8 episodes this season (season average 8.5). It aired on July 28, 2015.