- Sebiscuits: "I think his ankle's broken, I heard something crack. Four of them chased us into a dark room full of planets; it was a very odd place, some of the time we were just floating in the dark — "
- Telekinibabe: "Master, we saw Uranus up close! Get it, Master? We saw Uranus — ha ha ha —"
- Sebiscuits: "anyway, one of them grabbed Force Baby's foot, I cast lightning and blew up Pluto in his face, but…"
- — The S.M.S.B. in the Space Chamber[src]
The Space Chamber is a dark room full of planets floating in midair. Presumably, it is from this Chamber where mutants study the aspect of space, as it is one of the limits of mutantry (along with time). Visitors may find themselves floating as well. Telekinibabe, for instance, went floating parallel to Uranus temporarily.
- The X-Adults: Endgame - Part 1 (first appearance)