When Balor was wheeled into Medical, he had a mass of bloody bandages covering his face. However, when Helena was removing them later, there was no sign of blood on the inside of them.
All of the clocks on the pillars showed 12:00 and never changed.
After ordering Security to confront Balor, Koenig rushes to the scene with Alan right behind him. Neither one bothers to bring a weapon; Alan has to take one from an unconscious security guard.
In the opening act, when they trigger the explosives, to achieve the effect of the rocks being blown into space they filmed upside down. After the initial explosion, you can see a cable (possibly the electrical cable to the charge) swinging "upward" as it hung loose.
Inside the asteroid, Koenig moves past Mike Baxter, but says, "Excuse me, Jim", the actor's real name.