Corrected entry: The scene showing the astronauts thrust towards the forward panels, and then violently back into their 'couches' is meant to show the massive thrust from the ascent and second stage engines. In fact, this sequence is inaccurate: The earlier Mercury and Gemini rockets did indeed create this massive 10 to 15-G load momentarily upon the astronauts, but the Saturn V did no such thing. The Saturn V never exceeded more than 2 Gs during any portion of lift off or ascent, and was in fact referred to as the "old man's rocket" by astronauts in reference to its relatively mild G-loads during flight.
Corrected entry: Many times in the movie, the Capcom refers to the CM and LM by their individual call signs, "Odyssey" and "Aquarius." In real life, those call signs would only be used when the LM had separated from the CM for a lunar landing. While the two ships were docked, as they were in this case for the entire mission, the single call sign "Apollo 13" would be used instead.
Corrected entry: In the scene where Tom Hanks' wife is in the shower and drops her wedding ring down the drain, when she bends down to try and catch it, you can see the stick-on bra and light green underwear she is wearing for modesty purposes. Hard to catch it in full speed, but try frame by frame. Guess she (or director Ron Howard) didn't want to take any chances of nudity getting into the film.
Corrected entry: At the beginning of the film Walter Cronkite is narrating "a mere 18 months after the tragedy of Apollo 1..." The Apollo 1 tragedy occurred 27 Jan 67, while the moon landing of Apollo 11 occurred 20 July 69. The two events are actually separated by a little less than 30 months.
Corrected entry: In the shot where Jim is with Marilyn, outside of their house right after the Apollo 11 landing, he blocks out the moon with his thumb. In the final shot, where he puts his finger in front of his face to hide out the moon again, you can see the shadow below his chest. It should be on his eye.
Corrected entry: Near the end of the movie, when the Apollo 13 is about to return to Earth, a lady goes to collect the Lovells' eldest daughter from her bedroom to join the rest of her waiting family by the television. She appears to calls her Mary, the actresses real name, not Barbara the name of the daughter in real life.
Corrected entry: Keeping the Earth in the window during the burn for trajectory correction is inaccurate because if the LM were pointing toward the earth, the window would be underneath the craft and the earth wouldn't be visible through the window. The earth is visible to be artistically consistent. This is mentioned by Jim Lovell on DVD Commentary.
Corrected entry: When he finds out he is being bumped to the Apollo 13 crew, Lovell is giving a tour at the vehicle assembly building at the Kennedy Space Center in Florida. In the next scene, he runs into his house, which seems to be in Houston - over 1000 miles away - to announce that he's going to the Moon in April, then races off to get back to training. It seems like an awfully long commute.
Corrected entry: In the scenes where all three astronauts are wearing their space suits, they all have a red collar on the helmet and red markings on suits. The LEM pilot (in this case Fred Haise) would have blue markings and a blue collar so that Houston (and others) could distinguish between the Commander and the LEM pilot when they were on the moon.
Corrected entry: When Deke tells Lovell that Mattingly will have to be removed from the flight, he says that if Lovell is unwilling to go with Swigert, the entire crew will be bumped to a later mission. Even if this really had been Lovell's decision to make (which it almost certainly wasn't in real life), there is no way that all three astronauts could have been bumped to a later mission. Even if the entire backup crew could have been brought up to speed in a week, they could not have flown Apollo 13, given that Charlie Duke (Fred Haise's backup as LEM pilot) had the measles.
Corrected entry: When the astronauts and their families gather around the television to watch the Apollo 11 moon landing, Neil Armstrong is shown on the TV set coming down the ladder normally, top to bottom of the screen. In the actual historical event, the network's TV feed was upside down, with Armstrong appearing to ascend from bottom to top. The surface of the moon appeared at the top of the screen. Moments later, the network corrected the feed.
Corrected entry: When Ken Mattingly is watching the launch from a field, he is seen next to a gold and black corvette. The gold and black corvette was a paint scheme chosen for the astrovette which was leased to the Apollo 12 mission crew for a dollar for a year. There were three of these cars, leased to astronauts Pete Conrad, Richard F. Gordon, Jr., and Alan Bean, not Ken Mattingly.
Corrected entry: When Jim comes home to inform his family that he is going to the moon, his teenage daughter comes out of her room to ask is she can wear her particular Halloween costume. Jim eventually says no, and she retreats into her room and the door slams shut. Jim walks to the door and the camera angle changes and you can see that the door is still open.
Corrected entry: Near the end, from one window of the spacecraft you can see a full moon. From the other window, there is a "full Earth." If you're between the moon and the Earth, one or the other would not be full. The sun does not go between the moon and the Earth. (If it did, we would not exist.).
Corrected entry: After Jack Lousma's recommendation to stir the oxygen tanks, Swigert is seen flipping two switches to start the stir that causes the "problem". However, there is a mistake here. Anyone who is familiar with the Command Module Cockpit and Instrument Panel knows that you stir the O2 tanks by flipping the "O2 FANS" to the on position, while Swigert is seen flipping them off. What he has done is disengaged the cryo stir fans, not started them.
Corrected entry: Right before the ship loses radio contact and goes behind the moon, a wide shot shows the ship heading behind the moon. In this shot, the ship casts a shadow into space which can be seen just above the ship. There is nothing nearby onto which a shadow could be cast, any debris from the explosion would be travelling off into space at high velocity in all directions.
Corrected entry: The consoles used in the movie were the actual consoles that were in the second and third floor MOCR (Mission Operations Control Room). The goose neck reading lamps did not exist, however. The shots of the hallways outside the MOCR in Building 30 were not authentic. Also, during the first two days of the disaster, the hallways on the second floor were lined with student chairs where programmers were working on the various scenarios for return and reentry. Ron Howard's dedication to accuracy is amazing because the information on the displays in Mission Control was authentic in format, the switch legends on the consoles were labels as they would have been and even the lights on the Keysets (the communication consoles with the telephone dial) were accurate in their color coding and in the flashing light indicating that a "talk loop" was active (monitor-only circuits were illuminated but not flashing).