Factual error: The scene at the Tycho excavation site where the uncovered monolith emits a radio signal after being illuminated by the rising sun incorrectly shows the sun directly overhead. This would be impossible as the crater Tycho is in the moon's southern hemisphere and the sun would never rise that high during the lunar summer.

Factual error: In the scene in which we see the space station from the cockpit of the approaching shuttle, the station does not appear to rotate because the shuttle is rotating at the same speed. OK...except that the station IS still rotating with respect to the sun, which means that the light source and shadows on the station should be moving.

Continuity: The view of the front of the moon buggy shows the sunlight coming from the right side of the screen(Pilot's left shoulder) But when we see his view out the window, the sunlight casts shadows as if the sun was behind them.

Revealing: When the astronauts are on the way to the monolith on the Moon, there are two windows seen within the interior of the small space shuttle. During their small lunch, in the left window, the horizon is seen as the surface of the Moon is flowing back against the direction of the flight. However, although sometimes this horizon fills up to half of the window, no horizon can be seen in the right window despite being located directly beside the left window. Nevertheless, the inclination of the Lunar surface should allow for it to be seen.

Continuity: The Discovery's crew quarters has five beds, three for the hibernating crew, two for the Bowman and Poole. The exact beds occupied by hibernating crew changes from one scene to the next.

Continuity: When Dave gets his supper,the order of the slop from right to left are: yellow, light brown, light brown, dark brown. Later when he's eating the order is: yellow, orange brown, dark brown, light brown.

Continuity: When Dave recaptures Frank with the pod, one of Frank's legs is outside the pod's pincers, but when Dave releases Frank to reenter the ship, both legs are in the pincer. Seems a bit risky to try to get another grip in the vacuum of space...

Continuity: In the scene where the astronauts are approaching the monolith on the moon, the earth is clearly seen in a gibbous phase near the horizon. In the next scene, the sun passes behind the earth, which is now in a "new" phase overhead. The earth does not change its position in the lunar sky, and certainly cannot change phase that fast.

Continuity: When Frank receives his parents' birthday message he is relaxing on the sun-bed. As the message drags on there is some intercutting with various other views about the room. One shot happens to be of the sun-bed from an alternative angle, and Frank is nowhere to be seen. In the next shot Frank is once again lying on the bed.

Continuity: Several times during Heywood's speech to the team at the crater, his arms shift from his sides with hands in pockets to in front of him with hands on the podium.

Continuity: The formation of the astronauts on the ramp to TMA-1 shifts from shot to shot.

Continuity: For most of the sequence during which the Orion space shuttle closes in to dock with Space Station One, we see the space station rotating counterclockwise, as viewed from the side the Orion is approaching. But the first two times we see the station (immediately before and immediately after the scene in which Floyd's pen floats free aboard the Orion), it is rotating clockwise. It is also apparently rotating clockwise in the shot from inside the station, looking out at the approaching Orion. The stars in this shot are turning clockwise, implying that the station is moving anti-clockwise, hence must be rotating clockwise when observed from the Orion.

Continuity: When Dr. Heywood is talking to his daughter, her hands shift between the first full shot on the screen and the shot over Heywood's shoulder.

Factual error: On board spaceship Discovery, the crew's living area is the spinning centrifuge, which spins about its axis to generate a gravity-like acceleration at its perimeter, the floor. When exiting the centrifuge a crewman climbs a ladder from the floor up to the hub, where there's a door leading to other parts. When Poole & Bowman climb this ladder, it's evident that they're under full body weight the whole way up. But in reality they'd get steadily lighter toward the hub. In fact, they'd be practically weightless within a few feet of it.

Other: When Dave goes to retrieve lifeless Frank the computer screen to his right which is supposed to show continuously updated data, twice displays a jagged line like those found near the end of a reel of a motion picture film.

Revealing: In the shot in which Dave Bowman is attempting to break into the Discovery after being locked out by Hal you can see, reflected in the Pod window as the Pod is spinning around, the edges and top corner of the small set of the Discovery hatch area.

Factual error: During the base briefing all the participants are walking quickly as they would on Earth. This kind of motion is impossible in the lower moon gravity and it is made clear throughout the film that no artificial gravity technology exists that might allow Earth-normal movement. Later, at the monolith excavation site, the walking is slower and more deliberate as it should be.

Continuity: The first time Dave is shown running around the room on the ship, in the roomwide shot he runs past the three hibernating crew, then the two empty beds. In the following chase shot on his back, he passes them in reverse order.

Revealing: In the beginning of the film where we see the ape-men, it looks as if they are wearing Converse All-Star type gym shoes that have been painted to look like feet. Perhaps the rocky terrain was too hard on the costumed actors' feet.

Continuity: In the scene where Floyd and his team are heading to the Lunar excavation site, they start to eat those synthetic sandwiches. One of the shots shows a closeup of Floyd. As he is right about to take a bite, the camera cuts back to a shot of the three men. However, Floyd's sandwich is instantaneously about a foot from his mouth and he is fully chewing.