Continuity mistake: During the scene where AJ is playing with cookies on Grace's stomach on the last night before the launch, the car behind them alternately appears and disappears as well as moves around. Best example - wide shot shows them well behind the car, then in a shot of Grace her head's right by the tyre.
Other mistake: The two ships that the astronauts and drillers are supposed to be new, military vessels that were top secret - and just happen to bear a resemblance to the actual NASA shuttle orbiter. But, when they are launched, on the wider shots it appears that the footage is just stock shots of the space shuttle taking off. It is only in the closer shots that they actually bother to show the fictional craft. (Additional Information: During the X-71 launch sequence, they used real Space Shuttle footage, and used computer graphics to stitch the image of the X-71 onto a shuttle rocket stack. However, at least once during the sequence, you could see they forgot or didn't bother to change the Shuttle to the X-71. They just left the video as it was, and you could clearly see that it was a real Shuttle, and not the X-71. )
Factual error: The idea of two spacecraft blasting off together so close to each other at the same time is a joke. One would put the other at great risk. Not only is there massive fire and heat, but the vibrations from the noise of the exhaust do great damage to the surroundings. And there is great inconsistency about just how close the two spacecraft really are. The first still shot taken in the dark has them at different towers about 150 yards apart. But, then all the men take an elevator up ONE tower and are split apart into the two groups at the top of the tower. Furthermore, the launch takes place at Kennedy Space Center Launch Complex 39: the fixed and rotating service structures built for the Space Shuttle are visible. The pads at LC 39 are 8,700 feet apart (just over 1.5 miles).
Continuity mistake: Just after Harry says "prepare the world for bad news," air raid sirens start. There's a panning down shot of some air raid speakers next to a Coca-Cola ad, with a truck parked in front of it. The angle then changes to a shot down the street (same street, same speakers, same Coca-Cola ad), except the truck isn't in front of the ad any more.
Factual error: In the scene with the "lunar roll" (where both shuttles Freedom and Independence are being sling-shot around the moon), they are said to be experiencing "9 and a half G's for 11 minutes". But during this time, the crew members are screaming at the top of their lungs at each other. Under that much pressure it would be nearly impossible to breathe, let alone scream. Even if they're wearing G-suits, with the helmets off, they would be directly exposed to the pressure.
Continuity mistake: Truman is seen in Florida talking with the astronauts prior to lift-off. From the same command center, he controls the entire mission. But Mission Control for all missions is in Houston, Texas. Once the rocket "clears the tower," Mission Control in Houston takes over. How can Truman be in Florida, then appear in Texas a few seconds later?
Continuity mistake: When the astronaut Sharp comes to his senses and decides to disarm the bomb while it is counting down, the digital readout is just all wrong. Bruce Willis is talking to him and the time reads 40 seconds left. After a good 20 seconds of talking, he starts working on the bomb with a screwdriver and the time reads 35 seconds. Next time we see it, it reads 30 seconds, then when the cover that holds the timer is removed it looks like it reads 45 seconds.
Continuity mistake: When Harry is golfing off of the oil rig, the holes on the golf ball are spaced about a yard away. In the next shot, before he hits it, the holes are right together. It also goes from saying just "Srixon" to "3 Srixon," then the lettering gets angled, then he finally hits it.