Questions relating to Carl Sagan, noted scientist, educator, and writer. Use this tag for questions about his science fiction works, his influence on the science fiction works of others, or about references to him.

For questions relating to Carl Sagan, noted scientist, educator, and writer. Only use for questions about the writer himself and not those about his works. For questions about his works use the relevant work tag.

Questions relating to Carl Sagan, noted scientist, educator, and writer. Use this tag for questions about his science fiction works, his influence on the science fiction works of others, or about references to him.