In this continuation of the Star Wars saga, our hero, Obi-Wan Kenobi, is chasing bad guy Jango Fett, who tries to escape in the thick rings of the planet Geonosis. Fett deploys "seismic charges" to kill Kenobi. When the charges explode, they send out huge shock waves that nearly shake Obi-Wan apart.

It makes for a very cool and exciting scene, except for one small problem: Sound waves can't travel in a vacuum. They need something to move through, like air, water, or rock. Of course, had George Lucas stuck to real science, Fett's gambit would have been silenced, and the movie would have been a lot shorter (not to mention less exciting).

Practically every space movie ever made has sounds in space, so singling out Star Wars may seem unfair. But in this particular case the plot depended on there being sound in space, putting this movie forever on the Bad Science list.

That said, the noisy battle (above) between man and machine on the planet's surface--where there is plenty of air--is acoustically perfect.