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Black Holes: The Secret Origin
Recent discoveries could explain how supermassive black holes grow so big, one of the universe's most mysterious questions. Neither dark matter nor cannibalism can fully explain these monsters, but the latest science might finally provide an answer.
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Other episodes for this season
![Most Amazing Discoveries](https://image.tmdb.org/t/p/w300/e24YuuiTkUa6C6NSLAxnJQ4SuvK.jpg)
![Mystery of Planet 9](https://image.tmdb.org/t/p/w300/jlMUMol2sh1zwGJyUBhrQdtiaeD.jpg)
![Black Holes: The Secret Origin](https://image.tmdb.org/t/p/w300/9k8ZKE8lCTj4iFkpcUVtfgIQpDy.jpg)
![Secret History of Pluto](https://image.tmdb.org/t/p/w300/90jaXeWGiHspmozsS8uDSCcJzPs.jpg)
![Stars That Kill](https://image.tmdb.org/t/p/w300/e5LiluR3FLIi5Ra9wihg9CvluCe.jpg)
![The Universe's Deadliest](https://image.tmdb.org/t/p/w300/sTjbmbsRorlAbgx75Q08hufcl1W.jpg)
![Life and Death on the Red Planet](https://image.tmdb.org/t/p/w300/nZYCdZbFvMHuRFJ19RBeMWymvpb.jpg)
![The Dark Matter Enigma](https://image.tmdb.org/t/p/w300/Asc0VbWwxGYv7kqbSGajssR2fKL.jpg)
![Strangest Alien Worlds](https://image.tmdb.org/t/p/w300/vCYywWXtcroRQTwnAOwxlSw7uPF.jpg)