| 100% | SAGAN | 5 | Astronomer and extraterrestrial researcher Carl __ |
| 49% | SAGAN | 5 | "Cosmos" writer and astronomer Carl |
| 47% | SAGAN | 5 | Astronomer Carl who wrote "Cosmos" and "Contact" |
| 46% | SAGAN | 5 | Astronomer Carl with a namesake asteroid and Martian crater |
| 37% | COSMIC | 6 | "The ___ Connection: An Extraterrestrial Perspective," book by the astronomer Carl Sagan which was originally published in 1973 |
| 36% | SAGAN | 5 | Astronomer Carl ___ |
| 36% | SAGAN | 5 | Astronomer Carl |
| 36% | SAGAN | 5 | Astronomer Carl ____ |
| 35% | GHEZ | 4 | Astronomer and 2020 Nobel Prize winner Andrea |
| 35% | GALILEI | 7 | Galileo __, Italian astronomer and physicist |
| 35% | CARL | 4 | ___ Sagan, famous astronomer and astrophysicist |
| 35% | REINERS | 7 | Carl and Rob |
| 34% | LAPLACE | 7 | French astronomer and marquis, Pierre-Simon |
| 34% | SAGAN | 5 | Carl Edward ___: American astronomer |
| 34% | WILSONS | 7 | Carl, luke and rebel |
| 33% | CUNITZ | 6 | Maria, astronomer and author of Urania Propitia |
| 33% | SAGAN | 5 | Astronomer Carl who wrote "Contact" |
| 33% | ORALHISTORY | 11 | Researcher's audiotapes and such |
| 33% | RUNNERS | 7 | Carl lewis and allyson felix |
| 33% | EDWINS | 6 | Astronomer Hubble and astronaut Aldrin |
| 33% | CLYDES | 6 | Astronomer Tombaugh and aviator Cessna |
| 33% | SAGAN | 5 | Late astronomer Carl |
| 32% | SAGAN | 5 | Carl who said "billions and billions . . ." |
| 32% | CZERNY | 6 | Carl __; Austrian pianist and pupil of Beethoven |
| 31% | NIELSEN | 7 | "Saul and David" composer Carl |
| 31% | SAGAN | 5 | "Cosmos" and "Contact" cosmologist Carl |
| 31% | ISAAC | 5 | ___ Newton, English mathematician and astronomer |
| 31% | HYPATIA | 7 | Mathematician and astronomer from Alexandria |
| 31% | OMAR | 4 | Persian poet and astronomer Khayyám |
| 31% | CARL | 4 | ___ Sagan, American astronomer and scientist who wrote the book "Cosmos" |