When the spaceship takes off, the ascent is vertical, but the footage shown afterwards, which represents the velocity of the ship, is that of a horizontal motion.
When Gor is first shown in the same scene as the Princess Aelita, and he descends a flight of stairs, he trips on one of the steps and for an instant he looses his seriousness and grins. Ijoshka, shown on the right, smirks slightly when the blooper occurs.