| 100% | DRAGONS | 7 | "The ___ of Eden: Speculations on the Evolution of Human Intelligence," 1977 book by Carl Sagan |
| 37% | ORIGIN | 6 | On the __ of Species, book on evolution |
| 36% | SIDE | 4 | "The Blind ___: Evolution of a Game," book by Michael Lewis that focuses on American football |
| 36% | DEADSOULS | 9 | Gogol's book on the owning of serfs by Tchitchikov |
| 34% | PALEBLUEDOT | 11 | *Iconic photograph taken by Voyager 1 at the request of Carl Sagan |
| 33% | SHADOWS | 7 | "___ of Forgotten Ancestors: A Search for Who We Are," 1993 book co-authored by Carl Sagan |
| 33% | MARS | 4 | "___ and the Mind of Man," book that features a panel discussion with Carl Sagan and others |
| 33% | SPYCATCHER | 10 | 1987 book by Peter Wright subtitled The Candid Autobiography of a Senior Intelligence Officer |
| 32% | WORLD | 5 | "The ___ of Lore: Dreadful Places," book authored by Aaron Mahnke, based on the documentary podcast "Lore" |
| 32% | COSMIC | 6 | "The ___ Connection: An Extraterrestrial Perspective," book by the astronomer Carl Sagan which was originally published in 1973 |
| 32% | COMET | 5 | 1985 non-fiction science book by Carl Sagan |
| 32% | HOUSINGBUBBLE | 13 | Subject of much speculation on the home front? |
| 32% | ARK | 3 | "Schindler's ___", original title of the book by Thomas Keneally that "Schindler's List" was based on |
| 31% | CHAIN | 5 | "The ___," 1977 song by Fleetwood Mac that was used on the soundtrack for "Guardians of the Galaxy Vol. 2" |
| 31% | COLD | 4 | The ___ and the Dark: The World after Nuclear War," 1984 book co-authored by Carl Sagan, Paul R. Ehrlich and others |
| 31% | GIANTS | 6 | "On the Shoulders of ___," scientific book that was compiled and edited by Stephen Hawking |
| 30% | MARYPOPPINS | 11 | Musical based on children's books by P.L. Travers and 1964 Disney film of the same name: 2 wds. |
| 30% | ABOUTTHEAUTHORS | 15 | Heading on the jacket of a co-written book |
| 30% | TITLE | 5 | Found on the front of a book |
| 30% | TOKOLOGY | 8 | 1885 book on the science of obstetrics |
| 30% | BLURBS | 6 | Promotional writings on the back of books |
| 30% | SEUSS | 5 | Name on the covers of kids' books |
| 30% | OLGADAPOLGA | 11 | The Tales of —, 1971 children’s book by Michael Bond |
| 30% | CRANIA | 6 | Images on a timeline of human evolution, maybe |
| 30% | NOW | 3 | "The Spectacular ___," romantic comedy film which was based on a book of the same name by Tim Tharp |
| 30% | BLURB | 5 | Preview text on the back of a book |
| 30% | MARGINS | 7 | Areas on the sides of a book page |
| 30% | ABC | 3 | Letters on the cover of some preschool books |
| 30% | OWN | 3 | "On My ___," 1958 book by the former first lady of the US, Eleanor Roosevelt |