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5 Comments
deathcowsays...This is great !!! I love Sagan explaining the (wrong) Io theory! We've learned so much since this.
siftbotsays...Tags for this video have been changed from 'tonight show, john denver, carl sagan, planets, mars, astronomy, discussion' to 'tonight show, john denver, carl sagan, planets, mars, astronomy, discussion, 1977, 70s' - edited by arvana
arvanasays...I love *vintage science talks, they show how "facts" are fluid and impermanent.
siftbotsays...Adding video to channels (Vintage) - requested by arvana.
johnald128says...An intelligent and inquisitive interviewer too, makes a change.
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