| Answer | Crossword Clue |
|---|---|
| hyperspace | (in science fiction) A notional space-time continuum in which it is possible to travel faster than light |
| subspaces | (in science fiction) A hypothetical space-time continuum used for communication at a speed faster than that of light |
| subspace | (in science fiction) A hypothetical space-time continuum used for communication at a speed faster than that of light |
