Interstellar, that's a word he can put together. Between the stars. She must come from someplace, or some time, similar to Will, with that dazzling expanse of glittering sky surrounding him on all sides. If so, then it's little wonder she's so comfortable inside the Helix Station - she's used to being in a small space surrounded by vast darkness.

Perhaps. Maybe she lived on a planet. But knowledge of the stars implies a vaster worldview than some ever experience.

"I... don't know the word 'rover' in that context," he admits with a half-smile. "Something that goes from star to star? A star ship?"