Continuity: In the earlier scenes on the planet's surface when the men still have their helmets on, it appears that the cameramen were also wearing space suits so that they would appear as crewmen on the visor reflections. Still too many people visible though.

Factual error: The roach-like insects that are apparently eating the algae and "producing oxygen" are continually referred to as nematodes. Nematodes are actually tiny round worms that have unsegmented bodies (unlike an earthworm).

Continuity: In every view of the front of Mars 1, you can clearly see the landing pod still attached, even when it's on Mars' surface.

Factual error: When the biologist guy talks about writing code for DNA he names the four codes as A, G, T, P, when they are actually A, G, T, C.

Factual error: Misunderstanding of centripetal acceleration. When the ship accelerates out of orbit early in the movie the rings are spinning to create artificial gravity (agrav). Using this method agrav gets weaker nearer the hub of the rotating section, yet, with the exception of the "stand him up" error already mentioned, agrav seems to be the same throughout the ship when the rings are spinning. When the ship loses power the agrav is gone immediately, and when power returns it comes back immediately, but this can't happen with a spinning ship. The ship and everything in it has angular momentum. That doesn't just go away. The rings will continue spinning and agrav will remain. If there are brakes to slow the rings down anything not secured (people, silverware, etc.) will continue in the direction of spin until it impacts something. To people inside it would seem as if the floor moved out from under them and the walls came over to hit them. When the rings start spinning again agrav doesn't just return and everything just fall to the floor. The agrav will increase with the spin rate. Anything/one floating will not be affected by the spinning until coming in contact with something connected to the walls of the ring. If there are no walls except the outer hull, around the ring where they are they will float until the air, which is slowly accelerated by the spinning ring, pushes them to the floor.

Visible crew/equipment: When the crew lands, watch their helmets, you can see the microphone and the crew.