Coming down to the wire!
It was cold on the other side of the airlock. Minus 25 degrees Fahrenheit, which was absolutely not something to go wandering around in without a vacuum suit, and another excuse not to let the suit use external air (which was at a low but breathable pressure. This part of the base was a twin hallway with ceramic planters in the middle, with service doors at regular intervals. The emergency lights were on, but that only weakened the overall gloom.
“Looks like they stripped this part of the base,” Tobias said.
“Yeah. See the planters?” Lillian replied. “No plants and no dirt. No ice, either. There isn’t even any hoar frost. The air must be as dry as a bone.”
“Don’t take a sample to check, Doctor.” Tobias tried a door. Neither the touchpad or the manual opener worked. “I wonder if they’re all like this?”
You forgot to close your parenthesis on “(which was at a low but breathable pressure”
Also, yes, you successfully made that parenthetical creepy.