Re: MYTHBUSTERS 10th Anniversary Season
About guns in space: funnily enough, Russians busted this myth when they installed a 23mm aircraft cannon in one of their space stations 40 years ago and test fired it.
But how many people have heard of Salyut 3? or the firing of the gun onboard?
Plus the wiki entry doesn't give much detailing on the firing (there's not even a definitive answer on the number of firings) and the outcome.