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Cosmos: A Spacetime Odyssey Discussions

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Join the heroic quest for knowledge as we set course for the stars with the twenty-first century reboot of Cosmos. Hosted by world-renowned astrophysicist Neil deGrasse Tyson, this thirteen-part ground-breaking series will venture to new worlds, trace our roots back to the hearts of ancient stars, and travel across the universe for a vision of the cosmos on the grandest scale.

Jump to season: 1 3

S1E1

Episode 1 and 2 Discussion 79 comments
Cosmos: A Spacetime Odyssey - Episode 1: "Standing Up In The Milky Way" Post-Live Chat Discussion Thread 586 comments
Cosmos: A Personal Voyage Rewatch - Episode 1: "The Shores of the Cosmic Ocean" Discussion Thread 7 comments
Cosmos: A Spacetime Odyssey - Episode 1: "Standing Up In The Milky Way" Live Chat Thread 956 comments
Revised Estimate Air Date for Episode 1 of Possible Worlds. 10 comments

S1E2

Cosmos: A Spacetime Odyssey - Episode 2: "Some Of The Things That Molecules Do" Discussion Thread 300 comments
Cosmos: A Personal Voyage Rewatch - Episode 2: "One Voice in the Cosmic Fugue" Discussion Thread 3 comments
Cosmos: A Spacetime Odyssey - Episode 2: "Some of the Things That Molecules Do" Live Chat Thread 476 comments

S1E3

Cosmos: Possible Worlds Episode 3: "Lost City of Life" Discussion Thread 19 comments
Cosmos: A Spacetime Odyssey - Episode 3: "When Knowledge Conquered Fear" Discussion Thread 702 comments
Cosmos: A Personal Voyage Rewatch - Episode 3: "The Harmony of the Worlds" Discussion Thread 2 comments

S1E4

Cosmos: Possible Worlds Episode 4: "Vavilov" Discussion Thread 25 comments
Cosmos: A Spacetime Odyssey - Episode 4: "A Sky Full of Ghosts" Discussion Thread 649 comments
Cosmos: A Personal Voyage Rewatch - Episode 4: "Heaven and Hell" Discussion Thread 5 comments

S1E5

Cosmos: Possible Worlds Episode 5: "The Cosmic Connectome" Discussion Thread 20 comments
Cosmos: A Spacetime Odyssey - Episode 5: "Hiding in the Light" Discussion Thread 383 comments
Cosmos: A Personal Voyage Rewatch - Episode 5: "Blues for a Red Planet" Discussion Thread 3 comments

S1E6

Cosmos: A Spacetime Odyssey - Episode 6: "Deeper, Deeper, Deeper Still" Discussion Thread 294 comments
Cosmos: A Personal Voyage Rewatch - Episode 6: "Travellers' Tales" Discussion Thread 2 comments

S1E7

Cosmos: Possible Worlds Episode 7: "The Search for Intelligent Life on Earth" Discussion Thread 23 comments
Cosmos: A Spacetime Odyssey - Episode 7: "The Clean Room" Discussion Thread 304 comments
Cosmos: A Personal Voyage Rewatch - Episode 7: "The Backbone of Night" Discussion Thread 1 comments

S1E8

Cosmos: Possible Worlds Episode 8: "The Sacrifice of Cassini" Discussion Thread 24 comments
Cosmos: A Spacetime Odyssey - Episode 8: "Sisters Of The Sun" Discussion Thread 205 comments
Cosmos: A Personal Voyage Rewatch - Episode 8: "Journeys in Space and Time" Discussion Thread 5 comments

S1E9

Cosmos: Possible Worlds Episode 9: "Magic Without Lies" Discussion Thread 21 comments
Cosmos: A Spacetime Odyssey - Episode 9: "The Lost Worlds of Planet Earth" Discussion Thread 266 comments
Cosmos: A Personal Voyage Rewatch - Episode 9: "The Lives of the Stars" Discussion Thread 0 comments

S1E10

Cosmos: Possible Worlds Episode 10: "A Tale of Two Atoms" Discussion Thread 15 comments
Cosmos: A Spacetime Odyssey - Episode 10: "The Electric Boy" Discussion Thread 188 comments
Cosmos: A Personal Voyage Rewatch - Episode 10: "The Edge of Forever" Discussion Thread 2 comments

S1E11

Cosmos: Possible Worlds Episode 11: "Coming of Age in the Anthropocene" Discussion Thread 6 comments
Cosmos: A Spacetime Odyssey - Episode 11: "The Immortals" Discussion Thread 402 comments
Cosmos: A Personal Voyage Rewatch - Episode 11: "The Persistence of Memory" Discussion Thread 0 comments

S1E12

Cosmos: Possible Worlds Episode 12: "Seven Wonders of the New World" Discussion Thread 6 comments
Cosmos: A Spacetime Odyssey - Episode 12: "The World Set Free" Discussion Thread 430 comments
After watching Episode 12, I'm curious why they didn't even discuss Nuclear Power. 33 comments
Cosmos: A Personal Voyage Rewatch - Episode 12: "Encyclopaedia Galactica" Discussion Thread 5 comments

S1E13

Cosmos: Possible Worlds Episode 13: "Seven Wonders of the New World" Discussion Thread - Finale 29 comments
Cosmos: A Spacetime Odyssey - Episode 13: "Unafraid of the Dark" Series Finale Discussion Thread 411 comments
Cosmos: A Personal Voyage Rewatch - Episode 13: "Who Speaks for Earth?" Discussion Thread 0 comments

S3E3

COSMOS: Possible Worlds (S3E3) “Lost City Of Life” discussion thread 3 comments

S3E4

COSMOS: Possible Worlds (S3Ep4) “Vavilov” discussion thread 2 comments