Carl Sagan is the one who wrote Cosmos and also co-created and hosted the original TV series Cosmos: A Personal Voyage.

Quick Scoop: Who wrote Cosmos?

  • The book Cosmos is a popular science classic written by astronomer Carl Sagan , first published in 1980 as a companion to the TV series.
  • The television series Cosmos: A Personal Voyage was likewise written by Carl Sagan along with collaborators, and he served as its on-screen host.

So if you’re asking “Sagan who wrote Cosmos?”, that’s Carl Sagan , the American astronomer, science communicator, and author behind both the book and the original TV series.

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