Revealing mistake: When Homer placed the rocket on his fence and lit it his friend asked "Should we get behind somethin'?" That's when the rocket explodes. When you see them fly back you don't need to slow motion it because you can clearly see the wires attached to their backs.
October Sky (1999)
1 revealing mistake
Directed by: Joe Johnston
Starring: Jake Gyllenhaal, Laura Dern, Chris Cooper, Chris Owen
Continuity mistake: When Homer is walking to Snake Root, he has a rolling pin in his box. You can see the pin change positions in the box.
Quentin: They watched us get arrested. We're practically ex-convicts. They'll never dance with us.
O'Dell: Jesus, Quentin, you don't know anything about women.
Trivia: The title "October Sky" is an anagram of "Rocket Boys," the book on which the movie is based.