Horizon
Horizon tells amazing science stories, unravels mysteries and reveals worlds you've never seen before.
Season 43 · Episode 5 ·
Most of Our Universe Is Missing
Only 4% of our universe is made from stuff we understand. Horizon explores the 96% that is made up of the elusive substance 'Dark Matter'.
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Episode 5 of season 43 of Horizon: “Most of Our Universe Is Missing”. Aired 2006-02-09. Watch it online free on ZapFlix.