Factual error: When the Millennium Falcon hides inside the 'cave' in the giant asteroid, as they go outside the ship, they remain stuck to the floor. Perhaps the Falcon has artificial gravity generators, but I doubt that giant space worms do. The effect of gravity can't come from the asteroid because as they enter the 'cave' we never see the Falcon level off to land. In reality, this would be like being able to walk vertically straight down the inside wall of a well without falling to the bottom.
Factual error: There are three major mistakes regarding gravity in the escape sequence in the asteroid field. Han and Chewie take the Millennium Falcon to refuge on an asteroid that, while visually huge, is still far too tiny to have sufficient gravity to allow humans to walk in anything like a normal fashion; yet, they walk normally both inside and outside of the ship. They also do not use pressurized suits outside of the ship, even though the asteroid's gravity should be far too weak to accumulate any significant atmospheric pressure; they use oxygen masks, but their blood should have boiled in near-zero atmospheric pressure. Finally, and most ridiculously, they fly straight down the giant cave worm's throat and land on the side of its throat (this is obvious in the shot where the Millennium Falcon lifts off and heads toward the toothy exit), and they get out and walk around on the side of its throat, which would mean the asteroid's gravity was impossibly perpendicular to its mass.Charles Austin Miller