Alternate versions for
"Cosmos" (1980) More at IMDbPro »

• For video release in the mid-1980s, an additional episode of this series was created, consisting of a one-on-one interview between Carl Sagan and media mogul Ted Turner, discussing the themes of the series.
  
  
• For the 2000 DVD release, some of the musical cues appeared in the original broadcast are no longer there, including the prominent and multi-episode use of Heldon's "Perspective 1" from the Agneta Nilsson album. Alternate performances of classical works can also be heard. Other musical cues are inserted including a few new compositions by Vangelis (though unconfirmed if Vangelis even did it).
  
  
• In 1991, Sagan taped new introductions and afterwords to mark the show's 10th anniversary. These new segments allowed him to update and correct information presented in the series.
  
  

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