Horizon
Horizon tells amazing science stories, unravels mysteries and reveals worlds you've never seen before.
Season 30 · Episode 9 ·
Here Be Monsters
This documentary by Horizon looks at how the Hubble space telescope is uncovering evidence of black holes in our distant galaxies.
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Episode 9 of season 30 of Horizon: “Here Be Monsters”. Aired 1993-03-01. Watch it online free on ZapFlix.