Continuity mistake: Whilst examining the wrapper with "Karaboudjan" written on it, the "K" is a centimeter away from the letter "A" and all the other letters are about a fifth of a centimeter away from the letters. Tintin then places a magnifying glass above the word "Karaboudjan". After doing this, the "K" that was a centimeter away from the "A" is now a fifth of a centimeter away from the "A", but none of the other letters seem to have changed distances.
Continuity mistake: When Tintin follows the mob member from the diner to the building, the scene cuts to an exterior shot. A hot dog stand is shown outside the building, with a vendor standing beside it, but in the next shot, the vendor is suddenly standing behind it.
Continuity mistake: Wolff is explaining that if the motor is shut off again, the magnetic sole boots they are wearing will stop them from floating. Whilst he is explaining this, he is placing the boot straps over the Velcro. The first strap he places is only partially on, but a few frames after, a blip occurs in the animation, and the strap is suddenly entirely over the Velcro. The same happens with the second strap as well.
Continuity mistake: To launch the model rocket into outer space, Tintin pushes a lever with a green handle. Once the control tower is told to engage the nuclear motor, the first lever that Tintin had pushed is now a blue lever and the second lever that Tintin is now holding onto is a grey lever. Two shots after that, both the levers are now green.
00:16:00 - 00:16:35Casual Person
Continuity mistake: When Tintin sees the detonator for the rocket, the two levers controlling the rocket are seen behind him. The levers are both level with each other, but once Tintin has rewired the detonator, the levers are in two different positions.
Continuity mistake: When Wolff is explaining to Haddock that the space suit will be lighter in space, Tintin and Snowy are standing in front of Haddock, but when they are shown on the monitor in the next shot, Tintin and Snowy are standing more beside Haddock.
Continuity mistake: When Calculus is showing Tintin and Haddock the airlocks in the rocket, there are three levers shown, two of which are level with each other. Once Calculus has been told to return to the centre, the two levers that were level with each are now in two different positions.
Continuity mistake: When driving to the landing pad, the number plate is shown to have fairly thin style numbering, but later in the scene, when the car is shown through the view of the binoculars, the numbering on the plate is much thicker.