| 100% | JENNER | 6 | Scientist who discovered the vaccine for smallpox |
| 67% | EDWARDJENNER | 12 | English scientist who is known for the smallpox vaccine: 2 wds. |
| 54% | THOMSON | 7 | Scientist who discovered the electron, J.J. __ |
| 47% | FLEMING | 7 | The Scottish scientist who discovered penicillin |
| 44% | ISAAC | 5 | Scientist ___ Newton who discovered the laws of gravity |
| 43% | BROCA | 5 | Scientist for whom a part of the brain is named |
| 43% | SALK | 4 | Scientist Jonas who developed a vaccine for polio |
| 41% | FLEMING | 7 | Scientist who discovered Penicillin |
| 41% | NOBEL | 5 | Scientist who discovered dynamite, Alfred __ |
| 41% | NOONE | 5 | Who discovers the perfect crime |
| 39% | VOLTA | 5 | Alessandro ___, scientist who discovered 110-Across |
| 39% | DESOTO | 6 | Spanish explorer who discovered the Mississippi |
| 39% | CHADWICK | 8 | James __; physicist who discovered the neutron |
| 39% | CHADWICK | 8 | Physicist James, who discovered the neutron |
| 39% | ALVAREZ | 7 | Physicist who discovered the iridium layer |
| 39% | MOHS | 4 | Friedrich —, German scientist after whom a scale for expressing the hardness of minerals is named |
| 38% | GEIGER | 6 | German physicist who discovered the atomic nucleus |
| 38% | ARTHURASHKIN | 12 | American scientist who won one half of the 2018 Nobel Prize in Physics for his work on optical tweezers: 2 wds. |
| 38% | LINDABUCK | 9 | US scientist who discovered how we smell things |
| 37% | GALILEO | 7 | Astronomer who discovered the main moons of Jupiter |
| 37% | WOLFGANGPAULI | 13 | 1945 Physics Nobelist who discovered the exclusion principle |
| 37% | DESOTO | 6 | Hernando —, Spanish explorer who discovered the Mississippi River |
| 37% | MARIECURIE | 10 | Scientist who coined the term “radioactivity” |
| 37% | IDED | 4 | Discovered the name of, for short |
| 37% | HERSCHEL | 8 | William —, astronomer who discovered the planet Uranus in 1781 |
| 37% | EINSTEIN | 8 | Scientist who espoused the theory of relativity |
| 37% | EINSTEIN | 8 | Scientist who developed the theory of relativity |
| 37% | GEOLOGIST | 9 | Scientist who studies rocks and the Earth |
| 36% | CARTIER | 7 | Jacques —, French explorer who discovered the St Lawrence River, Canada |
| 36% | TOLLS | 5 | For Whom the Bell _____ |