Overview: Astronaut Mike Massimino explores the dark secret of the Milky Way, the home to both Earth and a terrifying supermassive black hole.
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First Air Date: Aug 22, 2017Last Air date: Sep 25, 2018Season: 2 SeasonEpisode: 23 EpisodeRuntime: 43 minutesQuality: HDIMDb: 7.80 / 10 by 5 usersPopularity: 2.014Language: English