The room is a massive circle; the walls are perfectly ring-shaped, the roof forms a colossal dome, and there are no corners due to the rounded nature of the installation. Four curved double doors, all aligned, provide easy access to and egress from the room. There are zero windows located anywhere within the structure's inner confines; it is impossible to see the inside of the planetarium from the outside or vice versa.

The lowered central area of the room is prominently visible from all other parts of the room; it houses the nucleus of the facility, a projector based on the latest real-world technology. Around this central well orbit rows and rows of seats in an almost-perfect loop around the room, broken only in the areas aligned with the northern exit of the room; in the center of this gap resides a desk, which houses the planetarium's controls.

It is readily apparent that the terrorists have made significant modifications to this room. The planetarium controls are entirely disabled; the lights are inactive, and the projector is locked in a powered-on position. When one is inside the room, they feel an immediate change; there is no gravity within the bounds of the chamber. The walls and floors now contain handrails, such as one might find on a space station; they serve to ground a student, should such a thing be needed.