Corrected entry: In the beginning of the movie, in the scene when the oil well "blows out," pipe starts flying into the air and oil shoots out everywhere. It does not happen like this. When an oil well "blows out" while drilling, the drilling fluid would be the first to come out, followed by the oil. Besides, the crew would shut the blow out 'preventers' long before the fluid would fly out as forceful as in the movie. Also the pipe would not fly out unless no preventive measures were taken. In a subsequent shot, they show one of the roughnecks turning a valve to shut the well in. In real life, the blow out preventers would have to be closed by actuating a hydraulic closure ram.
Corrected entry: In the scene where the window of the shuttle breaks and the air force pilot is sucked out we see him get hit by the other shuttle, fully intact. Realistically the rapid change from pressure to no pressure would cause him to blow up like a balloon and explode.
Corrected entry: This movie makes the same mistake several others do about the effects of nuclear explosions. Without an atmosphere, you get a very hot fireball and some radiation. there is no air to create a pressure wave which would blow the asteroid apart. At the most, you have a melted center and maybe the asteroid would collapse on itself if it had enough gravity.
Corrected entry: If "NASA doubles up on everything.", why didn't the nuclear bomb on Independence go off when it crashed? Colonel Sharp stops Stamper from hitting their bomb with a wrench since it would set it off, so why didn't the one on Independence detonate?
Corrected entry: If the asteroid has a new rotation axis after passing the Moon the drill teams wouldn't have missed their drill sites by just about 20 miles, they would have ended up elsewhere, but not near their landing zone because the landing zones would be elsewhere obviously.
Corrected entry: Several NASA officials and space crew throughout the movie refer to distance measured in feet. The fact is that NASA several years ago switched to the metric system. NASA officials and space crew should therefore refer to distances measured in meters (as they do in Independence Day).
Corrected entry: As the shuttle comes into land near the end of the movie, everyone got out and went over to their families to hug and kiss them; whilst people in anti-radioactive suits came up to clap them... WHAT.?. Wait firstly, the astronauts have just been on alien grounds. Don't they need to go through some test to make sure they haven't made contact with alien viruses? And secondly, people in these suits don't just come out to clap (although some did go to the shuttle).
Corrected entry: I find it highly unlikely that all of those astronauts would have gleaming white teeth.
Corrected entry: When the team lands on the asteroid, one of the team members lets a stream of sand fall from his hand. The sand blows in a slight breeze...
Corrected entry: The asteroid is the size of Texas, yet has Earth gravity as shown when pipes are dropped on the ground and don't float at all. The only time there isn't earth gravity is when they need to fly.
Corrected entry: Shortly before Stamper detonates the nuke we see a computer screen at NASA which shows the asteroid nearly at "Zero Barrier". Only 1 minute later, the screen is visible a second time and the two halves of the asteroid are already beyond the tangent where it would have hit earth on a straight flight. Earlier in the movie it is said that it'd take the asteroid about 3 hours and 57 minutes to get from zero barrier to hit earth. So it's impossible for the two halves to be beyond that line. (02:12:45)
Corrected entry: What happens to all the rubble extracted from the hole they dig? There must be tons of the stuff, but there's no sign of it...
Corrected entry: A few things about splitting the asteroid always annoyed me. They couldn't possibly calculate that drilling a certain depth would "split" the asteroid rather then blowing it to smaller but still deadly bits. Even if they did calculate right they did this on stable rotation. But as they stated the asteroid started rotating unpredictably after passing the moon so it could have turned towards earth causing one piece to hit as they calculated and the other to hit just a bit later. And last even if all 2 previous scenarios go just right (as in the movie) we saw that the asteroid was covered with huge high and sharp "mountains" which would most likely break of in the explosion and rain down on earth. So either way earth would be doomed.