| Answer | Crossword Clue |
|---|---|
| tachyonic | relating to a tachyon, a faster-than-light particle |
| TACHYON | Hypothetical particle that travels faster than light |
| tachyon | hypothetical particle that travels faster than the speed of light |
| tachyons | hypothetical particle that travels faster than the speed of light |
| hyperspace | (in science fiction) A notional space-time continuum in which it is possible to travel faster than light |
| subnuclear | of, relating to, or being a particle smaller than the atomic nucleus |
