| 100% | MARSODYSSEY | 11 | NASA's unmanned mission to the Red Planet launched in 2001, named in honor of an Arthur C. Clarke novel |
| 33% | ROMANTELESCOPE | 14 | NASA project set to launch in 2027, named for the former chief of astronomy |
| 31% | SONGS | 5 | "The ___ of Distant Earth," 1986 sci-fi novel by Arthur C. Clarke that is set in the early 3800s |
| 31% | MOON | 4 | Destination in Arthur C. Clarke's novel "Prelude to Space" |
| 31% | HAMMER | 6 | "The ___ of God," 1993 sci-fi novel by Arthur C. Clarke that is set in the year 2109 |
| 30% | ISLANDS | 7 | "___ in the Sky," 1952 sci-fi novel by Arthur C. Clarke that is set in the later half of the 21st century |
| 29% | CEDILLA | 7 | Character such as that placed under the c in French name Francois that softens the sound from that of k to s |
| 29% | NEIL | 4 | First name in NASA's prestigious list of astronauts who have been to the moon |
| 28% | AUTO | 4 | Lead-in to straddle, in the name of an online magazine |
| 28% | MARS | 4 | You will get to see the NASA rover Opportunity land on this red planet in 2004 |
| 27% | RAMA | 4 | "Rendezvous with ___," 1973 novel by Arthur C. Clarke that is set in the 2130s |
| 27% | PRINCE | 6 | "___ Caspian: The Return to Narnia," second novel in the fantasy series "The Chronicles of Narnia" by C.S. Lewis |
| 27% | CLARKE | 6 | Arthur C —, author of science fiction novels The Sands of Mars and Prelude to Space |
| 27% | HIDDENFIGURES | 13 | Name given to the team of NASA mathematicians who performed calculations for early space launches (2 wds.) |
| 27% | HAMMER | 6 | "The ___ of God" (sci-fi novel by Arthur C. Clarke) |
| 26% | EARTH | 5 | "Journey to the Center of the ___," Jules Verne novel that features our planet in its title |
| 26% | TEAK | 4 | Plant whose name becomes that of a meat product when an s is added to the beginning |
| 26% | THELAST | 7 | & 17D 1956 novel in The Chronicles of Narnia series by C S Lewis |
| 26% | NARNIA | 6 | Setting of seven fantasy novels by C S Lewis published in the 1950s |
| 26% | LYS | 3 | City in Arthur C. Clarke's "The City and the Stars" |
| 26% | RONPAUL | 7 | Name in the news that's an anagram of OUR PLAN |
| 26% | JIMTHORPE | 9 | The Greatest Athlete of the 20th Century, according to an ABC Wide World of Sports poll in 2001: 2 wds. |
| 26% | USSKITTYHAWK | 12 | Carrier named in honor of the Wright brothers' flight |
| 26% | MARS | 4 | "A Princess of ___," Edgar Rice Burroughs novel featuring the "Red Planet" in its title |
| 26% | WILT | 4 | First name of the only player to score 100 points in an NBA game |
| 26% | RINGS | 5 | Feature of the planet Saturn closely studied by NASA's Cassini mission |
| 26% | MARS | 4 | "The Sands of ___" (Arthur C. Clarke's first science fiction novel) |
| 26% | SKYTEL | 6 | Minor planet named in honor of a magazine for stargazers |
| 25% | RAMA | 4 | "Rendezvous with ___" (Arthur C. Clarke novel that features an asteroid named for a Hindu god) |