About the 'Goof'
I was curious about the claimed 'Goof' in this movie, as I aced my college Astronomy classes and even gave lectures. So I listened VERY carefully to what he said. He actually says LITTLE DIPPER not Big Dipper. Since I happen to know that the star at the end of the handle of the Little Dipper IS the North Star, his statement is TRUE!
The only 'Goof' is the claim of there being a Goof.