Martha’s mind is reeling; space is a vacuum, there’s no air on the moon. By rights, all the air should already have been sucked out of the hospital; few buildings are designed to be completely airtight. Why bother when there’s air all around on earth?
But off earth is another matter.
Nobody’s suffocating, or even having trouble breathing, therefore the air inside the building must be staying put. It’s completely impossible, but so is the fact that the entire hospital just got transported to the moon.
As scary as the situation is, it’s the most amazing thing Martha’s ever experienced.