Corrected entry: The gravity on Mars is about 1/3 of the gravity on Earth. So, the astronauts weight 1/3 as much, but their mass is the same. Yet, they move about and carry things as if they are on Earth. Objects should have been much lighter, and they should have been slower and more deliberate in their movements, for a lower-gravity environment.
Corrected entry: The spacewalk is replete with violations of physical laws:  Thruster exhaust would be necessary only to start and stop motion: not to sustain motion. 'Fuel' would be used only to start and stop motion. Thus, once Terry started towards Woody, she would not be in danger of running out of fuel during the trek. She would only need fuel to stop once she reached him. (Of course, she would need more fuel to start & stop the return trek. But even more fundamentally: Woody would not have expended his fuel load during his transit so Terry wouldn't have needed to come rescue him in the first place.)  When the grappling hook was launched, the person holding the launching device would be propelled in the opposite direction as the grappling hook's direction. (The larger the mass, the slower the acceleration, but thruster fuel would still be required to counteract the forces derived from the hook's launch.)  When the grappling hook stopped due to its line being fully extended, the line's tension would cause the bodies at both its ends (the hook & the gun with the gun's possessor) to snap towards each other. As erroneously depicted, only the hook end recoiled.
Corrected entry: The spinning habitation module is far too small and is spinning too slowly to produce any sort of force to simulate gravity. e.g. If you assume that the module has a radius of 5m, and is spinning at 0.2 revs/sec, then an astronaut would be subject to an acceleration of 0.2 m/s squared, or 0.02g.
Corrected entry: In space there is no sound at all, so we couldn't hear the explosion of the spaceship.
Corrected entry: When the Martian hologram shows Earth, the woman says that it is Earth before the continents separated. However, we see that the continents are indeed divided on the hologram.
Corrected entry: When the engine fuel leaks out after the meteor hits the ship, it comes out perpendicular to the direction of the ship's motion. Well, if you remember Newton's Laws of motion, then you'll know then an object will continue to move at the same velocity unless subject to a force. So how on earth does the fuel end up behind the ship at the engines? It should continue to move away from the ship, because nothing will make it do otherwise.
Corrected entry: Black gaffer tape can be seen on the orange plastic, presumably covering holes from punctures and tears. Yet if any of these had occurred the greenhouse covering would have exploded, like a balloon.
Corrected entry: When Tim Robbins is helplessly floating into space, his rescue is not as impossible as it is depicted. It ought to be common knowledge let alone known to an astronaut that an object in a vacuum requires only a minimal amount of thrust to travel almost perpetually in the one direction. Fuel would only be an issue with turning around and returning. They'd only need a tiny bit of thrust to catch him.
Corrected entry: Jerry O' Connell refers to earthquakes on Mars. On Mars, earthquakes are called marsquakes.
Corrected entry: Contrary to popular belief, space is NOT cold. The vacuum is a perfect insulator and therefore an object in a vacuum will only lose heat by radiation, which for a drop of liquid or a human head is very slow. Objects which suddenly find themselves in a vacuum do not suddenly get all icy. Real astronauts had to carry lots of extra oxygen in their space-suits to carry away their excess body heat, otherwise that heat would have nowhere to go, and they would bake.
Corrected entry: The space ship's super-computer (with touchscreen, voice-control and stuff) doesn't notice the hole in the fuel tank and the loss of fuel. Even my car can notice fuel-reduction when driving.
Corrected entry: Don Cheanile's character has been stranded on Mars for over a year. How come he can't cut his hair or shave, but his teeth look so white and clean?
Factual error: Gary Sinise looks at a computer screen with a short section (about two full twists) of DNA on it and proclaims that "This DNA looks human." He could have been looking at DNA from any single-celled organism and it would have looked just as human as what he was looking at. All mammals have 90+ percent of their DNA in common, he would have to have sequenced the entire DNA strand (something like 3 billion pairs of amino acids) to identify it as human, something that would be totally beyond the capacity of anything but a well-equipped genetics lab, something they show no sign of having.