| # | Clue | Answer As Given | Value | Round | Category | Air Date | Show |
|---|---|---|---|---|---|---|---|
| A posthumous collection of this astronomer's writings is titled "Billions and Billions" | (Carl) Sagan | $800 | DJ | POSTHUMOUS PUBLISHING | 2017-03-22 | #7493 | |
| In the last chapter of "Billions & Billions", this scientist talked about the disease that took his life | Carl Sagan DD | $3,200 | J | PUBLISHED POSTHUMOUSLY | 2013-01-15 | #6522 |