Factual error: When Cindy is giving her "fossil-to-chromosome ratio" report, she calls her model dinosaur skeleton a plesiosaur. However, the skeleton is of a bipedal dinosaur (likely a hadrosaur, judging by the "duckbill"), while plesiosaurs were aquatic reptiles with flippers instead of feet.
Jimmy Neutron: Boy Genius (2001)
1 factual error
Directed by: John A. Davis
Starring: Rob Paulsen, Debi Derryberry, Jeffrey Garcia, Mark DeCarlo, Megan Cavanagh
Character mistake: When Jimmy explains to the kids of the town where the aliens took their parents, he mentions the origin of the aliens being somewhere in the Orion Star System, 3 million light years away. The Orion system is way closer than that. It is actually less than 1400 light years away from Earth. 3 million light years away would place them further than the Andromeda Galaxy.
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Suggested correction: This shouldn't be a character mistake. A genius like Jimmy would know something like this. It's basic astronomy.
That's exactly why it's a character mistake. A character mistake is when a character does or says something that they shouldn't based on who/what they are suppose to be, or something a character wrongly states as fact when they should know better.
Carl: Hey, this astronaut food isn't too bad.
Jimmy: That's toothpaste, Carl.
Carl: Oh. Minty.
Trivia: If you have seen Kung Pow: Enter the Fist (which stars Steve Oderkerk, who wrote Jimmy Neutron) it ends with a giant monster's foot stepping beside the main character's. This foot is the same foot as the giant chicken monster in this movie.
Question: Near the ending, when the kids fly very close to the sun, how were they able to survive its super-intense heat?
Answer: This is not meant to be a realistic film.