| 100% | ERNST | 5 | With 61-Across, physicist who studied supersonics |
| 66% | MACH | 4 | Physicist who studied supersonic flow |
| 50% | UPTO | 4 | With 61 Across, current |
| 49% | HOOT | 4 | With 61 Across, night fliers |
| 49% | SEWED | 5 | With 61 Across, thread line |
| 49% | TWEEDLEDUM | 10 | With 61-Across, a fictional pair who are hard to tell apart |
| 48% | PROFILESIN | 10 | With 61 Across, 1956 best-seller |
| 47% | NASA | 4 | Org. concerned with 61 Across |
| 47% | DOPPLER | 7 | Eponymous Austrian physicist who studied waves |
| 45% | IMJUSTWILD | 10 | With 61 Across, 1948 campaign song by 20/59 Across |
| 45% | MARIE | 5 | With 38-Across, physicist who pioneered research on radioactivity |
| 44% | FEEDINGTO | 9 | With 61 Across, giving up another for one's own benefit |
| 42% | HANSXIANOERSTED | 15 | Danish physicist who pioneered the study of electromagnetism |
| 41% | THE | 3 | With 61-Across, finis |
| 41% | NOT | 3 | With 61-Across, mediocre |
| 40% | BACHELOROF | 10 | With 61-Across, college conferral |
| 40% | MINERAL | 7 | With 61-Across, prospectors' targets |
| 40% | POO | 3 | With 61-Across, bigwig: Var. |
| 40% | LUNAR | 5 | With 37-Across, Ivy Leaguer who studies by moonlight? |
| 40% | MACH | 4 | Physicist Ernst who studied shock waves |
| 40% | YES | 3 | With 61-Across, "Yer darn tootin'!" |
| 40% | STE | 3 | With 61-Across, river of Québec |
| 40% | UNIDENTIFIED | 12 | With 61-Across, dubious tabloid image |
| 40% | SANS | 4 | With 61-Across, like some typefaces |
| 40% | STATE | 5 | With 61-Across, under government control |
| 39% | ROSEN | 5 | Nathan ___, physicist who collaborated with Einstein on a theory of wormholes |
| 39% | STEPHEN | 7 | With 17 Across, justice who announced his retirement in 2022 |
| 39% | MIKHAIL | 7 | With 117 Across, dancer who can't help disrupting sermons? |
| 39% | BEST | 4 | With 52 Across, one who may give a wedding speech |
| 39% | INFORMAL | 8 | With 61-Across, what these answers show |