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How the Universe Works· Season 9 · Episode 4

Aliens of the Microcosmos

S09E04·7.7·April 14, 2021·1h·Science

The hidden kingdom of microscopic alien organisms shapes the universe as much as galaxies, stars, and planets; new discoveries reveal how bacteria, viruses, and other micro-organisms built life on Earth and influence humanity's future in the cosmos.

Streaming on (US) HBO Max Amazon ChannelDiscovery+ Amazon ChannelYouTube TVPhiloScience ChannelSee all

#10In Season 9of 11 rated episodes
#85All-timeof 92 rated episodes
−0.8vs season avgSeason 9 averages 8.5
2021First airedApril 14, 2021

Guest stars

Aomawa L. ShieldsAomawa L. Shieldsas Astronomer
Carly HowettCarly Howettas Planetary Scientist
Lewis DartnellLewis Dartnellas Astrobiologist
Kathryn BywatersKathryn Bywatersas Astrobiologist

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