Trivia: The portrait that Tintin sits for at the start of the movie is a perfect rendition of how Hergé drew him in the books. Also if you note as Tintin gets up to leave, many of the characters from all of the books Hergé wrote are in a big collage in the background.
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Trivia: During the title credits, a rocket can be seen in the background of one shot. This is a reference to the book The Adventures of Tintin: Destination Moon.