One thing that they didn't get right was the length of the voyage. To go to Pluto and back in 7 years would require absolutely fantastic speeds, and major accelerations and decelerations. Think of how long it took the Voyagers to get that far, and they're still the fastest objects humans have ever created. It took Voyager 2 12 years just to get ONE WAY to Neptune! But it's a small quibble about a great show.
